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Finding the Fourth Proportional to 495.42, 742.67 and 251.66

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Solution

The fourth proportional to 495.42, 742.67 and 251.66 is: 377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.42 : 742.67 = 251.66 : x
  2. Step 2: Convert to fraction form
    495.42/742.67 = 251.66/x
  3. Step 3: Cross multiply
    495.42x = 742.67 × 251.66
  4. Step 4: Simplify right side
    495.42x = 186,895.36
  5. Step 5: Solve for x
    x = 186,895.36/495.42
  6. Step 6: Final answer
    x = 377.25

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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.