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Finding the Fourth Proportional to 114.67, 158.22 and 64.85

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Solution

The fourth proportional to 114.67, 158.22 and 64.85 is: 89.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.67 : 158.22 = 64.85 : x
  2. Step 2: Convert to fraction form
    114.67/158.22 = 64.85/x
  3. Step 3: Cross multiply
    114.67x = 158.22 × 64.85
  4. Step 4: Simplify right side
    114.67x = 10,260.39
  5. Step 5: Solve for x
    x = 10,260.39/114.67
  6. Step 6: Final answer
    x = 89.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.