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Finding the Fourth Proportional to 253.98, 380.70 and 226.98

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Solution

The fourth proportional to 253.98, 380.70 and 226.98 is: 340.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.98 : 380.70 = 226.98 : x
  2. Step 2: Convert to fraction form
    253.98/380.70 = 226.98/x
  3. Step 3: Cross multiply
    253.98x = 380.70 × 226.98
  4. Step 4: Simplify right side
    253.98x = 86,411.29
  5. Step 5: Solve for x
    x = 86,411.29/253.98
  6. Step 6: Final answer
    x = 340.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.