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Finding the Fourth Proportional to 910.03, 1,255.49 and 560.11

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Solution

The fourth proportional to 910.03, 1,255.49 and 560.11 is: 772.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.03 : 1,255.49 = 560.11 : x
  2. Step 2: Convert to fraction form
    910.03/1,255.49 = 560.11/x
  3. Step 3: Cross multiply
    910.03x = 1,255.49 × 560.11
  4. Step 4: Simplify right side
    910.03x = 703,209.70
  5. Step 5: Solve for x
    x = 703,209.70/910.03
  6. Step 6: Final answer
    x = 772.73

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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.