Home / 641.23-961.84-154.28

Finding the Fourth Proportional to 641.23, 961.84 and 154.28

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Solution

The fourth proportional to 641.23, 961.84 and 154.28 is: 231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.23 : 961.84 = 154.28 : x
  2. Step 2: Convert to fraction form
    641.23/961.84 = 154.28/x
  3. Step 3: Cross multiply
    641.23x = 961.84 × 154.28
  4. Step 4: Simplify right side
    641.23x = 148,387.09
  5. Step 5: Solve for x
    x = 148,387.09/641.23
  6. Step 6: Final answer
    x = 231.41

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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.