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Finding the Fourth Proportional to 944.96, 1,415.60 and 619.34

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Solution

The fourth proportional to 944.96, 1,415.60 and 619.34 is: 927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.96 : 1,415.60 = 619.34 : x
  2. Step 2: Convert to fraction form
    944.96/1,415.60 = 619.34/x
  3. Step 3: Cross multiply
    944.96x = 1,415.60 × 619.34
  4. Step 4: Simplify right side
    944.96x = 876,737.70
  5. Step 5: Solve for x
    x = 876,737.70/944.96
  6. Step 6: Final answer
    x = 927.80

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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.