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Finding the Fourth Proportional to 663.74, 994.70 and 501.25

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Solution

The fourth proportional to 663.74, 994.70 and 501.25 is: 751.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.74 : 994.70 = 501.25 : x
  2. Step 2: Convert to fraction form
    663.74/994.70 = 501.25/x
  3. Step 3: Cross multiply
    663.74x = 994.70 × 501.25
  4. Step 4: Simplify right side
    663.74x = 498,585.90
  5. Step 5: Solve for x
    x = 498,585.90/663.74
  6. Step 6: Final answer
    x = 751.18

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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.