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Finding the Fourth Proportional to 964.49, 1,446.39 and 379.44

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Solution

The fourth proportional to 964.49, 1,446.39 and 379.44 is: 569.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.49 : 1,446.39 = 379.44 : x
  2. Step 2: Convert to fraction form
    964.49/1,446.39 = 379.44/x
  3. Step 3: Cross multiply
    964.49x = 1,446.39 × 379.44
  4. Step 4: Simplify right side
    964.49x = 548,818.22
  5. Step 5: Solve for x
    x = 548,818.22/964.49
  6. Step 6: Final answer
    x = 569.03

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Double scale
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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.