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Finding the Fourth Proportional to 495.32, 743.18 and 187.11

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Solution

The fourth proportional to 495.32, 743.18 and 187.11 is: 280.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.32 : 743.18 = 187.11 : x
  2. Step 2: Convert to fraction form
    495.32/743.18 = 187.11/x
  3. Step 3: Cross multiply
    495.32x = 743.18 × 187.11
  4. Step 4: Simplify right side
    495.32x = 139,055.47
  5. Step 5: Solve for x
    x = 139,055.47/495.32
  6. Step 6: Final answer
    x = 280.74

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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.