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Finding the Fourth Proportional to 637.78, 880.02 and 357.97

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Solution

The fourth proportional to 637.78, 880.02 and 357.97 is: 493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.78 : 880.02 = 357.97 : x
  2. Step 2: Convert to fraction form
    637.78/880.02 = 357.97/x
  3. Step 3: Cross multiply
    637.78x = 880.02 × 357.97
  4. Step 4: Simplify right side
    637.78x = 315,020.76
  5. Step 5: Solve for x
    x = 315,020.76/637.78
  6. Step 6: Final answer
    x = 493.94

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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.