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Finding the Fourth Proportional to 259.11, 357.88 and 171.63

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Solution

The fourth proportional to 259.11, 357.88 and 171.63 is: 237.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.11 : 357.88 = 171.63 : x
  2. Step 2: Convert to fraction form
    259.11/357.88 = 171.63/x
  3. Step 3: Cross multiply
    259.11x = 357.88 × 171.63
  4. Step 4: Simplify right side
    259.11x = 61,422.09
  5. Step 5: Solve for x
    x = 61,422.09/259.11
  6. Step 6: Final answer
    x = 237.05

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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.