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Finding the Fourth Proportional to 653.30, 979.90 and 166.36

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Solution

The fourth proportional to 653.30, 979.90 and 166.36 is: 249.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.30 : 979.90 = 166.36 : x
  2. Step 2: Convert to fraction form
    653.30/979.90 = 166.36/x
  3. Step 3: Cross multiply
    653.30x = 979.90 × 166.36
  4. Step 4: Simplify right side
    653.30x = 163,016.16
  5. Step 5: Solve for x
    x = 163,016.16/653.30
  6. Step 6: Final answer
    x = 249.53

Related Problems

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Half scale
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Double scale
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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.