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Finding the Fourth Proportional to 630.58, 944.82 and 219.49

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Solution

The fourth proportional to 630.58, 944.82 and 219.49 is: 328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.58 : 944.82 = 219.49 : x
  2. Step 2: Convert to fraction form
    630.58/944.82 = 219.49/x
  3. Step 3: Cross multiply
    630.58x = 944.82 × 219.49
  4. Step 4: Simplify right side
    630.58x = 207,378.54
  5. Step 5: Solve for x
    x = 207,378.54/630.58
  6. Step 6: Final answer
    x = 328.87

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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.