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Finding the Fourth Proportional to 187.36, 280.26 and 157.69

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Solution

The fourth proportional to 187.36, 280.26 and 157.69 is: 235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.36 : 280.26 = 157.69 : x
  2. Step 2: Convert to fraction form
    187.36/280.26 = 157.69/x
  3. Step 3: Cross multiply
    187.36x = 280.26 × 157.69
  4. Step 4: Simplify right side
    187.36x = 44,194.20
  5. Step 5: Solve for x
    x = 44,194.20/187.36
  6. Step 6: Final answer
    x = 235.88

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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.