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Finding the Fourth Proportional to 207.24, 311.02 and 158.60

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Solution

The fourth proportional to 207.24, 311.02 and 158.60 is: 238.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.24 : 311.02 = 158.60 : x
  2. Step 2: Convert to fraction form
    207.24/311.02 = 158.60/x
  3. Step 3: Cross multiply
    207.24x = 311.02 × 158.60
  4. Step 4: Simplify right side
    207.24x = 49,327.77
  5. Step 5: Solve for x
    x = 49,327.77/207.24
  6. Step 6: Final answer
    x = 238.02

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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.