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Finding the Fourth Proportional to 85.60, 116.52 and 85.60

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Solution

The fourth proportional to 85.60, 116.52 and 85.60 is: 116.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85.60 : 116.52 = 85.60 : x
  2. Step 2: Convert to fraction form
    85.60/116.52 = 85.60/x
  3. Step 3: Cross multiply
    85.60x = 116.52 × 85.60
  4. Step 4: Simplify right side
    85.60x = 9,974.11
  5. Step 5: Solve for x
    x = 9,974.11/85.60
  6. Step 6: Final answer
    x = 116.52

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.