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Finding the Fourth Proportional to 495.18, 738.90 and 443.25

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Solution

The fourth proportional to 495.18, 738.90 and 443.25 is: 661.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.18 : 738.90 = 443.25 : x
  2. Step 2: Convert to fraction form
    495.18/738.90 = 443.25/x
  3. Step 3: Cross multiply
    495.18x = 738.90 × 443.25
  4. Step 4: Simplify right side
    495.18x = 327,517.43
  5. Step 5: Solve for x
    x = 327,517.43/495.18
  6. Step 6: Final answer
    x = 661.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.