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Finding the Fourth Proportional to 60.15, 83.07 and 48

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Solution

The fourth proportional to 60.15, 83.07 and 48 is: 66.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.15 : 83.07 = 48 : x
  2. Step 2: Convert to fraction form
    60.15/83.07 = 48/x
  3. Step 3: Cross multiply
    60.15x = 83.07 × 48
  4. Step 4: Simplify right side
    60.15x = 3,987.36
  5. Step 5: Solve for x
    x = 3,987.36/60.15
  6. Step 6: Final answer
    x = 66.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.