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Finding the Fourth Proportional to 227.45, 340.95 and 117.81

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Solution

The fourth proportional to 227.45, 340.95 and 117.81 is: 176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.45 : 340.95 = 117.81 : x
  2. Step 2: Convert to fraction form
    227.45/340.95 = 117.81/x
  3. Step 3: Cross multiply
    227.45x = 340.95 × 117.81
  4. Step 4: Simplify right side
    227.45x = 40,167.32
  5. Step 5: Solve for x
    x = 40,167.32/227.45
  6. Step 6: Final answer
    x = 176.60

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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.