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Finding the Fourth Proportional to 514.75, 772.32 and 190.15

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Solution

The fourth proportional to 514.75, 772.32 and 190.15 is: 285.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.75 : 772.32 = 190.15 : x
  2. Step 2: Convert to fraction form
    514.75/772.32 = 190.15/x
  3. Step 3: Cross multiply
    514.75x = 772.32 × 190.15
  4. Step 4: Simplify right side
    514.75x = 146,856.65
  5. Step 5: Solve for x
    x = 146,856.65/514.75
  6. Step 6: Final answer
    x = 285.30

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Double scale
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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.