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Finding the Fourth Proportional to 944.18, 1,415.69 and 450.74

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Solution

The fourth proportional to 944.18, 1,415.69 and 450.74 is: 675.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.18 : 1,415.69 = 450.74 : x
  2. Step 2: Convert to fraction form
    944.18/1,415.69 = 450.74/x
  3. Step 3: Cross multiply
    944.18x = 1,415.69 × 450.74
  4. Step 4: Simplify right side
    944.18x = 638,112.78
  5. Step 5: Solve for x
    x = 638,112.78/944.18
  6. Step 6: Final answer
    x = 675.84

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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.