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Finding the Fourth Proportional to 72.30, 107.97 and 62.19

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Solution

The fourth proportional to 72.30, 107.97 and 62.19 is: 92.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72.30 : 107.97 = 62.19 : x
  2. Step 2: Convert to fraction form
    72.30/107.97 = 62.19/x
  3. Step 3: Cross multiply
    72.30x = 107.97 × 62.19
  4. Step 4: Simplify right side
    72.30x = 6,714.65
  5. Step 5: Solve for x
    x = 6,714.65/72.30
  6. Step 6: Final answer
    x = 92.87

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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.