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Finding the Fourth Proportional to 158.46, 236.64 and 131.10

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Solution

The fourth proportional to 158.46, 236.64 and 131.10 is: 195.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.46 : 236.64 = 131.10 : x
  2. Step 2: Convert to fraction form
    158.46/236.64 = 131.10/x
  3. Step 3: Cross multiply
    158.46x = 236.64 × 131.10
  4. Step 4: Simplify right side
    158.46x = 31,023.50
  5. Step 5: Solve for x
    x = 31,023.50/158.46
  6. Step 6: Final answer
    x = 195.78

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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.