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Finding the Fourth Proportional to 174.48, 240.73 and 100.79

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Solution

The fourth proportional to 174.48, 240.73 and 100.79 is: 139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.48 : 240.73 = 100.79 : x
  2. Step 2: Convert to fraction form
    174.48/240.73 = 100.79/x
  3. Step 3: Cross multiply
    174.48x = 240.73 × 100.79
  4. Step 4: Simplify right side
    174.48x = 24,261.72
  5. Step 5: Solve for x
    x = 24,261.72/174.48
  6. Step 6: Final answer
    x = 139.05

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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.