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Finding the Fourth Proportional to 634.38, 943.01 and 615.69

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Solution

The fourth proportional to 634.38, 943.01 and 615.69 is: 915.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.38 : 943.01 = 615.69 : x
  2. Step 2: Convert to fraction form
    634.38/943.01 = 615.69/x
  3. Step 3: Cross multiply
    634.38x = 943.01 × 615.69
  4. Step 4: Simplify right side
    634.38x = 580,601.83
  5. Step 5: Solve for x
    x = 580,601.83/634.38
  6. Step 6: Final answer
    x = 915.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.