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Finding the Fourth Proportional to 230.38, 318.52 and 220.18

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Solution

The fourth proportional to 230.38, 318.52 and 220.18 is: 304.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.38 : 318.52 = 220.18 : x
  2. Step 2: Convert to fraction form
    230.38/318.52 = 220.18/x
  3. Step 3: Cross multiply
    230.38x = 318.52 × 220.18
  4. Step 4: Simplify right side
    230.38x = 70,130.14
  5. Step 5: Solve for x
    x = 70,130.14/230.38
  6. Step 6: Final answer
    x = 304.42

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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.