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Finding the Fourth Proportional to 495.61, 743.20 and 187.30

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Solution

The fourth proportional to 495.61, 743.20 and 187.30 is: 280.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.61 : 743.20 = 187.30 : x
  2. Step 2: Convert to fraction form
    495.61/743.20 = 187.30/x
  3. Step 3: Cross multiply
    495.61x = 743.20 × 187.30
  4. Step 4: Simplify right side
    495.61x = 139,201.36
  5. Step 5: Solve for x
    x = 139,201.36/495.61
  6. Step 6: Final answer
    x = 280.87

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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.