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Finding the Fourth Proportional to 1,184.50, 1,635.02 and 718.75

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Solution

The fourth proportional to 1,184.50, 1,635.02 and 718.75 is: 992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.50 : 1,635.02 = 718.75 : x
  2. Step 2: Convert to fraction form
    1,184.50/1,635.02 = 718.75/x
  3. Step 3: Cross multiply
    1,184.50x = 1,635.02 × 718.75
  4. Step 4: Simplify right side
    1,184.50x = 1,175,167.03
  5. Step 5: Solve for x
    x = 1,175,167.03/1,184.50
  6. Step 6: Final answer
    x = 992.12

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.