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Finding the Fourth Proportional to 146.32, 219.43 and 65.11

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Solution

The fourth proportional to 146.32, 219.43 and 65.11 is: 97.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.32 : 219.43 = 65.11 : x
  2. Step 2: Convert to fraction form
    146.32/219.43 = 65.11/x
  3. Step 3: Cross multiply
    146.32x = 219.43 × 65.11
  4. Step 4: Simplify right side
    146.32x = 14,287.03
  5. Step 5: Solve for x
    x = 14,287.03/146.32
  6. Step 6: Final answer
    x = 97.64

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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.