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Finding the Fourth Proportional to 116.00, 159.85 and 83.19

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Solution

The fourth proportional to 116.00, 159.85 and 83.19 is: 114.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.00 : 159.85 = 83.19 : x
  2. Step 2: Convert to fraction form
    116.00/159.85 = 83.19/x
  3. Step 3: Cross multiply
    116.00x = 159.85 × 83.19
  4. Step 4: Simplify right side
    116.00x = 13,297.92
  5. Step 5: Solve for x
    x = 13,297.92/116.00
  6. Step 6: Final answer
    x = 114.64

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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.