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Finding the Fourth Proportional to 653.19, 979.95 and 190.97

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Solution

The fourth proportional to 653.19, 979.95 and 190.97 is: 286.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.19 : 979.95 = 190.97 : x
  2. Step 2: Convert to fraction form
    653.19/979.95 = 190.97/x
  3. Step 3: Cross multiply
    653.19x = 979.95 × 190.97
  4. Step 4: Simplify right side
    653.19x = 187,143.50
  5. Step 5: Solve for x
    x = 187,143.50/653.19
  6. Step 6: Final answer
    x = 286.51

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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.