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Finding the Fourth Proportional to 725.82, 1,001.19 and 677.22

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Solution

The fourth proportional to 725.82, 1,001.19 and 677.22 is: 934.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.82 : 1,001.19 = 677.22 : x
  2. Step 2: Convert to fraction form
    725.82/1,001.19 = 677.22/x
  3. Step 3: Cross multiply
    725.82x = 1,001.19 × 677.22
  4. Step 4: Simplify right side
    725.82x = 678,025.89
  5. Step 5: Solve for x
    x = 678,025.89/725.82
  6. Step 6: Final answer
    x = 934.15

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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.