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Finding the Fourth Proportional to 552.12, 828.32 and 512.91

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Solution

The fourth proportional to 552.12, 828.32 and 512.91 is: 769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.12 : 828.32 = 512.91 : x
  2. Step 2: Convert to fraction form
    552.12/828.32 = 512.91/x
  3. Step 3: Cross multiply
    552.12x = 828.32 × 512.91
  4. Step 4: Simplify right side
    552.12x = 424,853.61
  5. Step 5: Solve for x
    x = 424,853.61/552.12
  6. Step 6: Final answer
    x = 769.50

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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.