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Finding the Fourth Proportional to 672.19, 927.31 and 436.22

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Solution

The fourth proportional to 672.19, 927.31 and 436.22 is: 601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.19 : 927.31 = 436.22 : x
  2. Step 2: Convert to fraction form
    672.19/927.31 = 436.22/x
  3. Step 3: Cross multiply
    672.19x = 927.31 × 436.22
  4. Step 4: Simplify right side
    672.19x = 404,511.17
  5. Step 5: Solve for x
    x = 404,511.17/672.19
  6. Step 6: Final answer
    x = 601.78

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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.