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Finding the Fourth Proportional to 60.94, 84.55 and 60.31

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Solution

The fourth proportional to 60.94, 84.55 and 60.31 is: 83.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.94 : 84.55 = 60.31 : x
  2. Step 2: Convert to fraction form
    60.94/84.55 = 60.31/x
  3. Step 3: Cross multiply
    60.94x = 84.55 × 60.31
  4. Step 4: Simplify right side
    60.94x = 5,099.21
  5. Step 5: Solve for x
    x = 5,099.21/60.94
  6. Step 6: Final answer
    x = 83.68

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.