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Finding the Fourth Proportional to 259.57, 357.78 and 251.83

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Solution

The fourth proportional to 259.57, 357.78 and 251.83 is: 347.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.57 : 357.78 = 251.83 : x
  2. Step 2: Convert to fraction form
    259.57/357.78 = 251.83/x
  3. Step 3: Cross multiply
    259.57x = 357.78 × 251.83
  4. Step 4: Simplify right side
    259.57x = 90,099.74
  5. Step 5: Solve for x
    x = 90,099.74/259.57
  6. Step 6: Final answer
    x = 347.11

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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.