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Finding the Fourth Proportional to 722.38, 996.45 and 547.42

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Solution

The fourth proportional to 722.38, 996.45 and 547.42 is: 755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.38 : 996.45 = 547.42 : x
  2. Step 2: Convert to fraction form
    722.38/996.45 = 547.42/x
  3. Step 3: Cross multiply
    722.38x = 996.45 × 547.42
  4. Step 4: Simplify right side
    722.38x = 545,476.66
  5. Step 5: Solve for x
    x = 545,476.66/722.38
  6. Step 6: Final answer
    x = 755.11

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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.