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Finding the Fourth Proportional to 517.08, 712.74 and 474.70

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Solution

The fourth proportional to 517.08, 712.74 and 474.70 is: 654.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.08 : 712.74 = 474.70 : x
  2. Step 2: Convert to fraction form
    517.08/712.74 = 474.70/x
  3. Step 3: Cross multiply
    517.08x = 712.74 × 474.70
  4. Step 4: Simplify right side
    517.08x = 338,337.68
  5. Step 5: Solve for x
    x = 338,337.68/517.08
  6. Step 6: Final answer
    x = 654.32

Related Problems

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.