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Finding the Fourth Proportional to 672.67, 927.42 and 436.20

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Solution

The fourth proportional to 672.67, 927.42 and 436.20 is: 601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.67 : 927.42 = 436.20 : x
  2. Step 2: Convert to fraction form
    672.67/927.42 = 436.20/x
  3. Step 3: Cross multiply
    672.67x = 927.42 × 436.20
  4. Step 4: Simplify right side
    672.67x = 404,540.60
  5. Step 5: Solve for x
    x = 404,540.60/672.67
  6. Step 6: Final answer
    x = 601.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.