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Finding the Fourth Proportional to 653.31, 979.99 and 166.37

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Solution

The fourth proportional to 653.31, 979.99 and 166.37 is: 249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.31 : 979.99 = 166.37 : x
  2. Step 2: Convert to fraction form
    653.31/979.99 = 166.37/x
  3. Step 3: Cross multiply
    653.31x = 979.99 × 166.37
  4. Step 4: Simplify right side
    653.31x = 163,036.04
  5. Step 5: Solve for x
    x = 163,036.04/653.31
  6. Step 6: Final answer
    x = 249.55

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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.