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Finding the Fourth Proportional to 165.04, 227.85 and 99.56

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Solution

The fourth proportional to 165.04, 227.85 and 99.56 is: 137.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.04 : 227.85 = 99.56 : x
  2. Step 2: Convert to fraction form
    165.04/227.85 = 99.56/x
  3. Step 3: Cross multiply
    165.04x = 227.85 × 99.56
  4. Step 4: Simplify right side
    165.04x = 22,684.94
  5. Step 5: Solve for x
    x = 22,684.94/165.04
  6. Step 6: Final answer
    x = 137.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.