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Finding the Fourth Proportional to 722.48, 996.56 and 501.48

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Solution

The fourth proportional to 722.48, 996.56 and 501.48 is: 691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.48 : 996.56 = 501.48 : x
  2. Step 2: Convert to fraction form
    722.48/996.56 = 501.48/x
  3. Step 3: Cross multiply
    722.48x = 996.56 × 501.48
  4. Step 4: Simplify right side
    722.48x = 499,754.91
  5. Step 5: Solve for x
    x = 499,754.91/722.48
  6. Step 6: Final answer
    x = 691.72

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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.