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Finding the Fourth Proportional to 158.37, 237.20 and 106.87

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Solution

The fourth proportional to 158.37, 237.20 and 106.87 is: 160.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.37 : 237.20 = 106.87 : x
  2. Step 2: Convert to fraction form
    158.37/237.20 = 106.87/x
  3. Step 3: Cross multiply
    158.37x = 237.20 × 106.87
  4. Step 4: Simplify right side
    158.37x = 25,349.56
  5. Step 5: Solve for x
    x = 25,349.56/158.37
  6. Step 6: Final answer
    x = 160.07

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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.