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Finding the Fourth Proportional to 725.26, 1,000.84 and 414.76

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Solution

The fourth proportional to 725.26, 1,000.84 and 414.76 is: 572.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.26 : 1,000.84 = 414.76 : x
  2. Step 2: Convert to fraction form
    725.26/1,000.84 = 414.76/x
  3. Step 3: Cross multiply
    725.26x = 1,000.84 × 414.76
  4. Step 4: Simplify right side
    725.26x = 415,108.40
  5. Step 5: Solve for x
    x = 415,108.40/725.26
  6. Step 6: Final answer
    x = 572.36

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Half scale
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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.