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Finding the Fourth Proportional to 461.95, 637.47 and 338.13

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Solution

The fourth proportional to 461.95, 637.47 and 338.13 is: 466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.95 : 637.47 = 338.13 : x
  2. Step 2: Convert to fraction form
    461.95/637.47 = 338.13/x
  3. Step 3: Cross multiply
    461.95x = 637.47 × 338.13
  4. Step 4: Simplify right side
    461.95x = 215,547.73
  5. Step 5: Solve for x
    x = 215,547.73/461.95
  6. Step 6: Final answer
    x = 466.61

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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.