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Finding the Fourth Proportional to 495.23, 742.39 and 202.66

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Solution

The fourth proportional to 495.23, 742.39 and 202.66 is: 303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.23 : 742.39 = 202.66 : x
  2. Step 2: Convert to fraction form
    495.23/742.39 = 202.66/x
  3. Step 3: Cross multiply
    495.23x = 742.39 × 202.66
  4. Step 4: Simplify right side
    495.23x = 150,450.39
  5. Step 5: Solve for x
    x = 150,450.39/495.23
  6. Step 6: Final answer
    x = 303.80

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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.