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Finding the Fourth Proportional to 524.96, 724.40 and 325.72

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Solution

The fourth proportional to 524.96, 724.40 and 325.72 is: 449.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.96 : 724.40 = 325.72 : x
  2. Step 2: Convert to fraction form
    524.96/724.40 = 325.72/x
  3. Step 3: Cross multiply
    524.96x = 724.40 × 325.72
  4. Step 4: Simplify right side
    524.96x = 235,951.57
  5. Step 5: Solve for x
    x = 235,951.57/524.96
  6. Step 6: Final answer
    x = 449.47

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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.