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Finding the Fourth Proportional to 248.78, 372.62 and 176.42

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Solution

The fourth proportional to 248.78, 372.62 and 176.42 is: 264.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.78 : 372.62 = 176.42 : x
  2. Step 2: Convert to fraction form
    248.78/372.62 = 176.42/x
  3. Step 3: Cross multiply
    248.78x = 372.62 × 176.42
  4. Step 4: Simplify right side
    248.78x = 65,737.62
  5. Step 5: Solve for x
    x = 65,737.62/248.78
  6. Step 6: Final answer
    x = 264.24

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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.