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Finding the Fourth Proportional to 634.46, 874.92 and 477.47

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Solution

The fourth proportional to 634.46, 874.92 and 477.47 is: 658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.46 : 874.92 = 477.47 : x
  2. Step 2: Convert to fraction form
    634.46/874.92 = 477.47/x
  3. Step 3: Cross multiply
    634.46x = 874.92 × 477.47
  4. Step 4: Simplify right side
    634.46x = 417,746.35
  5. Step 5: Solve for x
    x = 417,746.35/634.46
  6. Step 6: Final answer
    x = 658.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.