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Finding the Fourth Proportional to 520.60, 717.96 and 374.18

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Solution

The fourth proportional to 520.60, 717.96 and 374.18 is: 516.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.60 : 717.96 = 374.18 : x
  2. Step 2: Convert to fraction form
    520.60/717.96 = 374.18/x
  3. Step 3: Cross multiply
    520.60x = 717.96 × 374.18
  4. Step 4: Simplify right side
    520.60x = 268,646.27
  5. Step 5: Solve for x
    x = 268,646.27/520.60
  6. Step 6: Final answer
    x = 516.03

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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.