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Finding the Fourth Proportional to 637.92, 880.52 and 405.18

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Solution

The fourth proportional to 637.92, 880.52 and 405.18 is: 559.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.92 : 880.52 = 405.18 : x
  2. Step 2: Convert to fraction form
    637.92/880.52 = 405.18/x
  3. Step 3: Cross multiply
    637.92x = 880.52 × 405.18
  4. Step 4: Simplify right side
    637.92x = 356,767.07
  5. Step 5: Solve for x
    x = 356,767.07/637.92
  6. Step 6: Final answer
    x = 559.27

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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.