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Finding the Fourth Proportional to 70.12, 104.59 and 60.38

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Solution

The fourth proportional to 70.12, 104.59 and 60.38 is: 90.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.12 : 104.59 = 60.38 : x
  2. Step 2: Convert to fraction form
    70.12/104.59 = 60.38/x
  3. Step 3: Cross multiply
    70.12x = 104.59 × 60.38
  4. Step 4: Simplify right side
    70.12x = 6,315.14
  5. Step 5: Solve for x
    x = 6,315.14/70.12
  6. Step 6: Final answer
    x = 90.06

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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.