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Finding the Fourth Proportional to 613.26, 915.39 and 541.17

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Solution

The fourth proportional to 613.26, 915.39 and 541.17 is: 807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.26 : 915.39 = 541.17 : x
  2. Step 2: Convert to fraction form
    613.26/915.39 = 541.17/x
  3. Step 3: Cross multiply
    613.26x = 915.39 × 541.17
  4. Step 4: Simplify right side
    613.26x = 495,381.61
  5. Step 5: Solve for x
    x = 495,381.61/613.26
  6. Step 6: Final answer
    x = 807.78

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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.