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Finding the Fourth Proportional to 237.80, 328.14 and 220.38

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Solution

The fourth proportional to 237.80, 328.14 and 220.38 is: 304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.80 : 328.14 = 220.38 : x
  2. Step 2: Convert to fraction form
    237.80/328.14 = 220.38/x
  3. Step 3: Cross multiply
    237.80x = 328.14 × 220.38
  4. Step 4: Simplify right side
    237.80x = 72,315.49
  5. Step 5: Solve for x
    x = 72,315.49/237.80
  6. Step 6: Final answer
    x = 304.10

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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.