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Finding the Fourth Proportional to 524.60, 724.13 and 314.84

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Solution

The fourth proportional to 524.60, 724.13 and 314.84 is: 434.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.60 : 724.13 = 314.84 : x
  2. Step 2: Convert to fraction form
    524.60/724.13 = 314.84/x
  3. Step 3: Cross multiply
    524.60x = 724.13 × 314.84
  4. Step 4: Simplify right side
    524.60x = 227,979.89
  5. Step 5: Solve for x
    x = 227,979.89/524.60
  6. Step 6: Final answer
    x = 434.58

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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.