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Finding the Fourth Proportional to 68.65, 94.23 and 62.47

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Solution

The fourth proportional to 68.65, 94.23 and 62.47 is: 85.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.65 : 94.23 = 62.47 : x
  2. Step 2: Convert to fraction form
    68.65/94.23 = 62.47/x
  3. Step 3: Cross multiply
    68.65x = 94.23 × 62.47
  4. Step 4: Simplify right side
    68.65x = 5,886.67
  5. Step 5: Solve for x
    x = 5,886.67/68.65
  6. Step 6: Final answer
    x = 85.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.