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Finding the Fourth Proportional to 237.86, 328.12 and 149.47

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Solution

The fourth proportional to 237.86, 328.12 and 149.47 is: 206.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.86 : 328.12 = 149.47 : x
  2. Step 2: Convert to fraction form
    237.86/328.12 = 149.47/x
  3. Step 3: Cross multiply
    237.86x = 328.12 × 149.47
  4. Step 4: Simplify right side
    237.86x = 49,041.71
  5. Step 5: Solve for x
    x = 49,041.71/237.86
  6. Step 6: Final answer
    x = 206.18

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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.