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Finding the Fourth Proportional to 889.05, 1,227.20 and 535.17

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Solution

The fourth proportional to 889.05, 1,227.20 and 535.17 is: 738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.05 : 1,227.20 = 535.17 : x
  2. Step 2: Convert to fraction form
    889.05/1,227.20 = 535.17/x
  3. Step 3: Cross multiply
    889.05x = 1,227.20 × 535.17
  4. Step 4: Simplify right side
    889.05x = 656,757.95
  5. Step 5: Solve for x
    x = 656,757.95/889.05
  6. Step 6: Final answer
    x = 738.72

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Double scale
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1.5x scale

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.