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Finding the Fourth Proportional to 174.84, 240.78 and 157.56

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Solution

The fourth proportional to 174.84, 240.78 and 157.56 is: 216.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.84 : 240.78 = 157.56 : x
  2. Step 2: Convert to fraction form
    174.84/240.78 = 157.56/x
  3. Step 3: Cross multiply
    174.84x = 240.78 × 157.56
  4. Step 4: Simplify right side
    174.84x = 37,937.30
  5. Step 5: Solve for x
    x = 37,937.30/174.84
  6. Step 6: Final answer
    x = 216.98

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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.