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Finding the Fourth Proportional to 237.60, 328.28 and 206.42

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Solution

The fourth proportional to 237.60, 328.28 and 206.42 is: 285.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.60 : 328.28 = 206.42 : x
  2. Step 2: Convert to fraction form
    237.60/328.28 = 206.42/x
  3. Step 3: Cross multiply
    237.60x = 328.28 × 206.42
  4. Step 4: Simplify right side
    237.60x = 67,760.88
  5. Step 5: Solve for x
    x = 67,760.88/237.60
  6. Step 6: Final answer
    x = 285.19

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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.