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Finding the Fourth Proportional to 495.02, 742.10 and 263.78

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Solution

The fourth proportional to 495.02, 742.10 and 263.78 is: 395.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.02 : 742.10 = 263.78 : x
  2. Step 2: Convert to fraction form
    495.02/742.10 = 263.78/x
  3. Step 3: Cross multiply
    495.02x = 742.10 × 263.78
  4. Step 4: Simplify right side
    495.02x = 195,751.14
  5. Step 5: Solve for x
    x = 195,751.14/495.02
  6. Step 6: Final answer
    x = 395.44

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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.