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Finding the Fourth Proportional to 524.99, 724.17 and 328.57

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Solution

The fourth proportional to 524.99, 724.17 and 328.57 is: 453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.99 : 724.17 = 328.57 : x
  2. Step 2: Convert to fraction form
    524.99/724.17 = 328.57/x
  3. Step 3: Cross multiply
    524.99x = 724.17 × 328.57
  4. Step 4: Simplify right side
    524.99x = 237,939.96
  5. Step 5: Solve for x
    x = 237,939.96/524.99
  6. Step 6: Final answer
    x = 453.23

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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.