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Finding the Fourth Proportional to 211.05, 291.03 and 169.48

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Solution

The fourth proportional to 211.05, 291.03 and 169.48 is: 233.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.05 : 291.03 = 169.48 : x
  2. Step 2: Convert to fraction form
    211.05/291.03 = 169.48/x
  3. Step 3: Cross multiply
    211.05x = 291.03 × 169.48
  4. Step 4: Simplify right side
    211.05x = 49,323.76
  5. Step 5: Solve for x
    x = 49,323.76/211.05
  6. Step 6: Final answer
    x = 233.71

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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.