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Finding the Fourth Proportional to 524.48, 724.36 and 358.40

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Solution

The fourth proportional to 524.48, 724.36 and 358.40 is: 494.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.48 : 724.36 = 358.40 : x
  2. Step 2: Convert to fraction form
    524.48/724.36 = 358.40/x
  3. Step 3: Cross multiply
    524.48x = 724.36 × 358.40
  4. Step 4: Simplify right side
    524.48x = 259,610.62
  5. Step 5: Solve for x
    x = 259,610.62/524.48
  6. Step 6: Final answer
    x = 494.99

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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.