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Finding the Fourth Proportional to 260.39, 357.06 and 251.66

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Solution

The fourth proportional to 260.39, 357.06 and 251.66 is: 345.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.39 : 357.06 = 251.66 : x
  2. Step 2: Convert to fraction form
    260.39/357.06 = 251.66/x
  3. Step 3: Cross multiply
    260.39x = 357.06 × 251.66
  4. Step 4: Simplify right side
    260.39x = 89,856.13
  5. Step 5: Solve for x
    x = 89,856.13/260.39
  6. Step 6: Final answer
    x = 345.08

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.