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Finding the Fourth Proportional to 653.13, 979.70 and 166.18

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Solution

The fourth proportional to 653.13, 979.70 and 166.18 is: 249.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.13 : 979.70 = 166.18 : x
  2. Step 2: Convert to fraction form
    653.13/979.70 = 166.18/x
  3. Step 3: Cross multiply
    653.13x = 979.70 × 166.18
  4. Step 4: Simplify right side
    653.13x = 162,808.19
  5. Step 5: Solve for x
    x = 162,808.19/653.13
  6. Step 6: Final answer
    x = 249.27

Related Problems

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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.