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Finding the Fourth Proportional to 274.61, 378.96 and 150.28

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Solution

The fourth proportional to 274.61, 378.96 and 150.28 is: 207.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.61 : 378.96 = 150.28 : x
  2. Step 2: Convert to fraction form
    274.61/378.96 = 150.28/x
  3. Step 3: Cross multiply
    274.61x = 378.96 × 150.28
  4. Step 4: Simplify right side
    274.61x = 56,948.60
  5. Step 5: Solve for x
    x = 56,948.60/274.61
  6. Step 6: Final answer
    x = 207.38

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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.