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Finding the Fourth Proportional to 722.67, 997.72 and 547.71

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Solution

The fourth proportional to 722.67, 997.72 and 547.71 is: 756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.67 : 997.72 = 547.71 : x
  2. Step 2: Convert to fraction form
    722.67/997.72 = 547.71/x
  3. Step 3: Cross multiply
    722.67x = 997.72 × 547.71
  4. Step 4: Simplify right side
    722.67x = 546,461.72
  5. Step 5: Solve for x
    x = 546,461.72/722.67
  6. Step 6: Final answer
    x = 756.17

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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.