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Finding the Fourth Proportional to 85.27, 117.48 and 60.67

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Solution

The fourth proportional to 85.27, 117.48 and 60.67 is: 83.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85.27 : 117.48 = 60.67 : x
  2. Step 2: Convert to fraction form
    85.27/117.48 = 60.67/x
  3. Step 3: Cross multiply
    85.27x = 117.48 × 60.67
  4. Step 4: Simplify right side
    85.27x = 7,127.51
  5. Step 5: Solve for x
    x = 7,127.51/85.27
  6. Step 6: Final answer
    x = 83.59

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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.