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Finding the Fourth Proportional to 847.28, 1,264.10 and 759.18

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Solution

The fourth proportional to 847.28, 1,264.10 and 759.18 is: 1,132.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.28 : 1,264.10 = 759.18 : x
  2. Step 2: Convert to fraction form
    847.28/1,264.10 = 759.18/x
  3. Step 3: Cross multiply
    847.28x = 1,264.10 × 759.18
  4. Step 4: Simplify right side
    847.28x = 959,679.44
  5. Step 5: Solve for x
    x = 959,679.44/847.28
  6. Step 6: Final answer
    x = 1,132.66

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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.