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Finding the Fourth Proportional to 384.80, 531.12 and 237.56

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Solution

The fourth proportional to 384.80, 531.12 and 237.56 is: 327.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.80 : 531.12 = 237.56 : x
  2. Step 2: Convert to fraction form
    384.80/531.12 = 237.56/x
  3. Step 3: Cross multiply
    384.80x = 531.12 × 237.56
  4. Step 4: Simplify right side
    384.80x = 126,172.87
  5. Step 5: Solve for x
    x = 126,172.87/384.80
  6. Step 6: Final answer
    x = 327.89

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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.