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Finding the Fourth Proportional to 1,171.81, 1,755.15 and 585.91

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Solution

The fourth proportional to 1,171.81, 1,755.15 and 585.91 is: 877.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.81 : 1,755.15 = 585.91 : x
  2. Step 2: Convert to fraction form
    1,171.81/1,755.15 = 585.91/x
  3. Step 3: Cross multiply
    1,171.81x = 1,755.15 × 585.91
  4. Step 4: Simplify right side
    1,171.81x = 1,028,359.94
  5. Step 5: Solve for x
    x = 1,028,359.94/1,171.81
  6. Step 6: Final answer
    x = 877.58

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.