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Finding the Fourth Proportional to 722.98, 997.60 and 424.11

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Solution

The fourth proportional to 722.98, 997.60 and 424.11 is: 585.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.98 : 997.60 = 424.11 : x
  2. Step 2: Convert to fraction form
    722.98/997.60 = 424.11/x
  3. Step 3: Cross multiply
    722.98x = 997.60 × 424.11
  4. Step 4: Simplify right side
    722.98x = 423,095.69
  5. Step 5: Solve for x
    x = 423,095.69/722.98
  6. Step 6: Final answer
    x = 585.21

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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.