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Finding the Fourth Proportional to 653.26, 979.89 and 166.31

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Solution

The fourth proportional to 653.26, 979.89 and 166.31 is: 249.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.26 : 979.89 = 166.31 : x
  2. Step 2: Convert to fraction form
    653.26/979.89 = 166.31/x
  3. Step 3: Cross multiply
    653.26x = 979.89 × 166.31
  4. Step 4: Simplify right side
    653.26x = 162,963.66
  5. Step 5: Solve for x
    x = 162,963.66/653.26
  6. Step 6: Final answer
    x = 249.46

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.