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Finding the Fourth Proportional to 524.97, 724.68 and 386.19

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Solution

The fourth proportional to 524.97, 724.68 and 386.19 is: 533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.97 : 724.68 = 386.19 : x
  2. Step 2: Convert to fraction form
    524.97/724.68 = 386.19/x
  3. Step 3: Cross multiply
    524.97x = 724.68 × 386.19
  4. Step 4: Simplify right side
    524.97x = 279,864.17
  5. Step 5: Solve for x
    x = 279,864.17/524.97
  6. Step 6: Final answer
    x = 533.11

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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.