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Finding the Fourth Proportional to 637.20, 879.08 and 462.16

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Solution

The fourth proportional to 637.20, 879.08 and 462.16 is: 637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.20 : 879.08 = 462.16 : x
  2. Step 2: Convert to fraction form
    637.20/879.08 = 462.16/x
  3. Step 3: Cross multiply
    637.20x = 879.08 × 462.16
  4. Step 4: Simplify right side
    637.20x = 406,275.61
  5. Step 5: Solve for x
    x = 406,275.61/637.20
  6. Step 6: Final answer
    x = 637.60

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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.