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Finding the Fourth Proportional to 1,517.32, 2,274.36 and 542.62

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Solution

The fourth proportional to 1,517.32, 2,274.36 and 542.62 is: 813.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.32 : 2,274.36 = 542.62 : x
  2. Step 2: Convert to fraction form
    1,517.32/2,274.36 = 542.62/x
  3. Step 3: Cross multiply
    1,517.32x = 2,274.36 × 542.62
  4. Step 4: Simplify right side
    1,517.32x = 1,234,113.22
  5. Step 5: Solve for x
    x = 1,234,113.22/1,517.32
  6. Step 6: Final answer
    x = 813.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.