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Finding the Fourth Proportional to 672.75, 928.18 and 377.97

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Solution

The fourth proportional to 672.75, 928.18 and 377.97 is: 521.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.75 : 928.18 = 377.97 : x
  2. Step 2: Convert to fraction form
    672.75/928.18 = 377.97/x
  3. Step 3: Cross multiply
    672.75x = 928.18 × 377.97
  4. Step 4: Simplify right side
    672.75x = 350,824.19
  5. Step 5: Solve for x
    x = 350,824.19/672.75
  6. Step 6: Final answer
    x = 521.48

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Find fourth proportional to 336.38, 464.09 and 188.99
Half scale
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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.