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Finding the Fourth Proportional to 944.38, 1,416.29 and 396.55

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Solution

The fourth proportional to 944.38, 1,416.29 and 396.55 is: 594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.38 : 1,416.29 = 396.55 : x
  2. Step 2: Convert to fraction form
    944.38/1,416.29 = 396.55/x
  3. Step 3: Cross multiply
    944.38x = 1,416.29 × 396.55
  4. Step 4: Simplify right side
    944.38x = 561,622.72
  5. Step 5: Solve for x
    x = 561,622.72/944.38
  6. Step 6: Final answer
    x = 594.70

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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.