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Finding the Fourth Proportional to 175.41, 261.66 and 157.20

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Solution

The fourth proportional to 175.41, 261.66 and 157.20 is: 234.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.41 : 261.66 = 157.20 : x
  2. Step 2: Convert to fraction form
    175.41/261.66 = 157.20/x
  3. Step 3: Cross multiply
    175.41x = 261.66 × 157.20
  4. Step 4: Simplify right side
    175.41x = 41,132.95
  5. Step 5: Solve for x
    x = 41,132.95/175.41
  6. Step 6: Final answer
    x = 234.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.