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Finding the Fourth Proportional to 398.30, 549.60 and 232.52

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Solution

The fourth proportional to 398.30, 549.60 and 232.52 is: 320.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.30 : 549.60 = 232.52 : x
  2. Step 2: Convert to fraction form
    398.30/549.60 = 232.52/x
  3. Step 3: Cross multiply
    398.30x = 549.60 × 232.52
  4. Step 4: Simplify right side
    398.30x = 127,790.24
  5. Step 5: Solve for x
    x = 127,790.24/398.30
  6. Step 6: Final answer
    x = 320.84

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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.