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Finding the Fourth Proportional to 174.42, 240.18 and 154.98

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Solution

The fourth proportional to 174.42, 240.18 and 154.98 is: 213.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.42 : 240.18 = 154.98 : x
  2. Step 2: Convert to fraction form
    174.42/240.18 = 154.98/x
  3. Step 3: Cross multiply
    174.42x = 240.18 × 154.98
  4. Step 4: Simplify right side
    174.42x = 37,223.10
  5. Step 5: Solve for x
    x = 37,223.10/174.42
  6. Step 6: Final answer
    x = 213.41

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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.