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Finding the Fourth Proportional to 69.15, 104.29 and 62.57

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Solution

The fourth proportional to 69.15, 104.29 and 62.57 is: 94.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.15 : 104.29 = 62.57 : x
  2. Step 2: Convert to fraction form
    69.15/104.29 = 62.57/x
  3. Step 3: Cross multiply
    69.15x = 104.29 × 62.57
  4. Step 4: Simplify right side
    69.15x = 6,525.53
  5. Step 5: Solve for x
    x = 6,525.53/69.15
  6. Step 6: Final answer
    x = 94.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.