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Finding the Fourth Proportional to 146.34, 219.71 and 143.91

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Solution

The fourth proportional to 146.34, 219.71 and 143.91 is: 216.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.34 : 219.71 = 143.91 : x
  2. Step 2: Convert to fraction form
    146.34/219.71 = 143.91/x
  3. Step 3: Cross multiply
    146.34x = 219.71 × 143.91
  4. Step 4: Simplify right side
    146.34x = 31,618.83
  5. Step 5: Solve for x
    x = 31,618.83/146.34
  6. Step 6: Final answer
    x = 216.06

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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.