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Finding the Fourth Proportional to 724, 998.40 and 592.60

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Solution

The fourth proportional to 724, 998.40 and 592.60 is: 817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724 : 998.40 = 592.60 : x
  2. Step 2: Convert to fraction form
    724/998.40 = 592.60/x
  3. Step 3: Cross multiply
    724x = 998.40 × 592.60
  4. Step 4: Simplify right side
    724x = 591,651.84
  5. Step 5: Solve for x
    x = 591,651.84/724
  6. Step 6: Final answer
    x = 817.20

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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.