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Finding the Fourth Proportional to 637.52, 879.40 and 462.56

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Solution

The fourth proportional to 637.52, 879.40 and 462.56 is: 638.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.52 : 879.40 = 462.56 : x
  2. Step 2: Convert to fraction form
    637.52/879.40 = 462.56/x
  3. Step 3: Cross multiply
    637.52x = 879.40 × 462.56
  4. Step 4: Simplify right side
    637.52x = 406,775.26
  5. Step 5: Solve for x
    x = 406,775.26/637.52
  6. Step 6: Final answer
    x = 638.06

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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.