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Finding the Fourth Proportional to 888.76, 1,227.12 and 539.92

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Solution

The fourth proportional to 888.76, 1,227.12 and 539.92 is: 745.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.76 : 1,227.12 = 539.92 : x
  2. Step 2: Convert to fraction form
    888.76/1,227.12 = 539.92/x
  3. Step 3: Cross multiply
    888.76x = 1,227.12 × 539.92
  4. Step 4: Simplify right side
    888.76x = 662,546.63
  5. Step 5: Solve for x
    x = 662,546.63/888.76
  6. Step 6: Final answer
    x = 745.47

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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.