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Finding the Fourth Proportional to 637.72, 880.02 and 401.62

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Solution

The fourth proportional to 637.72, 880.02 and 401.62 is: 554.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.72 : 880.02 = 401.62 : x
  2. Step 2: Convert to fraction form
    637.72/880.02 = 401.62/x
  3. Step 3: Cross multiply
    637.72x = 880.02 × 401.62
  4. Step 4: Simplify right side
    637.72x = 353,433.63
  5. Step 5: Solve for x
    x = 353,433.63/637.72
  6. Step 6: Final answer
    x = 554.21

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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.