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Finding the Fourth Proportional to 624.08, 935.08 and 426.13

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Solution

The fourth proportional to 624.08, 935.08 and 426.13 is: 638.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.08 : 935.08 = 426.13 : x
  2. Step 2: Convert to fraction form
    624.08/935.08 = 426.13/x
  3. Step 3: Cross multiply
    624.08x = 935.08 × 426.13
  4. Step 4: Simplify right side
    624.08x = 398,465.64
  5. Step 5: Solve for x
    x = 398,465.64/624.08
  6. Step 6: Final answer
    x = 638.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.