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Finding the Fourth Proportional to 674.32, 930.94 and 450.19

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Solution

The fourth proportional to 674.32, 930.94 and 450.19 is: 621.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.32 : 930.94 = 450.19 : x
  2. Step 2: Convert to fraction form
    674.32/930.94 = 450.19/x
  3. Step 3: Cross multiply
    674.32x = 930.94 × 450.19
  4. Step 4: Simplify right side
    674.32x = 419,099.88
  5. Step 5: Solve for x
    x = 419,099.88/674.32
  6. Step 6: Final answer
    x = 621.51

Related Problems

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.