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Finding the Fourth Proportional to 498.25, 687.25 and 332.47

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Solution

The fourth proportional to 498.25, 687.25 and 332.47 is: 458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.25 : 687.25 = 332.47 : x
  2. Step 2: Convert to fraction form
    498.25/687.25 = 332.47/x
  3. Step 3: Cross multiply
    498.25x = 687.25 × 332.47
  4. Step 4: Simplify right side
    498.25x = 228,491.28
  5. Step 5: Solve for x
    x = 228,491.28/498.25
  6. Step 6: Final answer
    x = 458.59

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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.