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Finding the Fourth Proportional to 259.31, 356.81 and 250.34

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Solution

The fourth proportional to 259.31, 356.81 and 250.34 is: 344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.31 : 356.81 = 250.34 : x
  2. Step 2: Convert to fraction form
    259.31/356.81 = 250.34/x
  3. Step 3: Cross multiply
    259.31x = 356.81 × 250.34
  4. Step 4: Simplify right side
    259.31x = 89,320.78
  5. Step 5: Solve for x
    x = 89,320.78/259.31
  6. Step 6: Final answer
    x = 344.45

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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.