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Finding the Fourth Proportional to 944.95, 1,304.49 and 630.40

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Solution

The fourth proportional to 944.95, 1,304.49 and 630.40 is: 870.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.95 : 1,304.49 = 630.40 : x
  2. Step 2: Convert to fraction form
    944.95/1,304.49 = 630.40/x
  3. Step 3: Cross multiply
    944.95x = 1,304.49 × 630.40
  4. Step 4: Simplify right side
    944.95x = 822,350.50
  5. Step 5: Solve for x
    x = 822,350.50/944.95
  6. Step 6: Final answer
    x = 870.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.