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Finding the Fourth Proportional to 648.37, 972.28 and 237.34

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Solution

The fourth proportional to 648.37, 972.28 and 237.34 is: 355.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.37 : 972.28 = 237.34 : x
  2. Step 2: Convert to fraction form
    648.37/972.28 = 237.34/x
  3. Step 3: Cross multiply
    648.37x = 972.28 × 237.34
  4. Step 4: Simplify right side
    648.37x = 230,760.94
  5. Step 5: Solve for x
    x = 230,760.94/648.37
  6. Step 6: Final answer
    x = 355.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.