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Finding the Fourth Proportional to 637.78, 880.12 and 358.05

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Solution

The fourth proportional to 637.78, 880.12 and 358.05 is: 494.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.78 : 880.12 = 358.05 : x
  2. Step 2: Convert to fraction form
    637.78/880.12 = 358.05/x
  3. Step 3: Cross multiply
    637.78x = 880.12 × 358.05
  4. Step 4: Simplify right side
    637.78x = 315,124.11
  5. Step 5: Solve for x
    x = 315,124.11/637.78
  6. Step 6: Final answer
    x = 494.09

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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.