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Finding the Fourth Proportional to 495.77, 743.72 and 149.11

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Solution

The fourth proportional to 495.77, 743.72 and 149.11 is: 223.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.77 : 743.72 = 149.11 : x
  2. Step 2: Convert to fraction form
    495.77/743.72 = 149.11/x
  3. Step 3: Cross multiply
    495.77x = 743.72 × 149.11
  4. Step 4: Simplify right side
    495.77x = 110,896.09
  5. Step 5: Solve for x
    x = 110,896.09/495.77
  6. Step 6: Final answer
    x = 223.68

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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.