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Finding the Fourth Proportional to 158.60, 237.98 and 131.56

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Solution

The fourth proportional to 158.60, 237.98 and 131.56 is: 197.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.60 : 237.98 = 131.56 : x
  2. Step 2: Convert to fraction form
    158.60/237.98 = 131.56/x
  3. Step 3: Cross multiply
    158.60x = 237.98 × 131.56
  4. Step 4: Simplify right side
    158.60x = 31,308.65
  5. Step 5: Solve for x
    x = 31,308.65/158.60
  6. Step 6: Final answer
    x = 197.41

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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.