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Finding the Fourth Proportional to 83.01, 114.48 and 64.59

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Solution

The fourth proportional to 83.01, 114.48 and 64.59 is: 89.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.01 : 114.48 = 64.59 : x
  2. Step 2: Convert to fraction form
    83.01/114.48 = 64.59/x
  3. Step 3: Cross multiply
    83.01x = 114.48 × 64.59
  4. Step 4: Simplify right side
    83.01x = 7,394.26
  5. Step 5: Solve for x
    x = 7,394.26/83.01
  6. Step 6: Final answer
    x = 89.08

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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.