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Finding the Fourth Proportional to 552.10, 828.55 and 445.18

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Solution

The fourth proportional to 552.10, 828.55 and 445.18 is: 668.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.10 : 828.55 = 445.18 : x
  2. Step 2: Convert to fraction form
    552.10/828.55 = 445.18/x
  3. Step 3: Cross multiply
    552.10x = 828.55 × 445.18
  4. Step 4: Simplify right side
    552.10x = 368,853.89
  5. Step 5: Solve for x
    x = 368,853.89/552.10
  6. Step 6: Final answer
    x = 668.09

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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.