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Finding the Fourth Proportional to 580.52, 870.84 and 190.51

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Solution

The fourth proportional to 580.52, 870.84 and 190.51 is: 285.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.52 : 870.84 = 190.51 : x
  2. Step 2: Convert to fraction form
    580.52/870.84 = 190.51/x
  3. Step 3: Cross multiply
    580.52x = 870.84 × 190.51
  4. Step 4: Simplify right side
    580.52x = 165,903.73
  5. Step 5: Solve for x
    x = 165,903.73/580.52
  6. Step 6: Final answer
    x = 285.78

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Double scale
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Similar ratio
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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.