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Finding the Fourth Proportional to 114.55, 158.05 and 64.73

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Solution

The fourth proportional to 114.55, 158.05 and 64.73 is: 89.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.55 : 158.05 = 64.73 : x
  2. Step 2: Convert to fraction form
    114.55/158.05 = 64.73/x
  3. Step 3: Cross multiply
    114.55x = 158.05 × 64.73
  4. Step 4: Simplify right side
    114.55x = 10,231.05
  5. Step 5: Solve for x
    x = 10,231.05/114.55
  6. Step 6: Final answer
    x = 89.32

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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.