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Finding the Fourth Proportional to 1,009.15, 1,513.72 and 461.18

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Solution

The fourth proportional to 1,009.15, 1,513.72 and 461.18 is: 691.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.15 : 1,513.72 = 461.18 : x
  2. Step 2: Convert to fraction form
    1,009.15/1,513.72 = 461.18/x
  3. Step 3: Cross multiply
    1,009.15x = 1,513.72 × 461.18
  4. Step 4: Simplify right side
    1,009.15x = 698,101.75
  5. Step 5: Solve for x
    x = 698,101.75/1,009.15
  6. Step 6: Final answer
    x = 691.77

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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.