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Finding the Fourth Proportional to 253.04, 378.84 and 167.36

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Solution

The fourth proportional to 253.04, 378.84 and 167.36 is: 250.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.04 : 378.84 = 167.36 : x
  2. Step 2: Convert to fraction form
    253.04/378.84 = 167.36/x
  3. Step 3: Cross multiply
    253.04x = 378.84 × 167.36
  4. Step 4: Simplify right side
    253.04x = 63,402.66
  5. Step 5: Solve for x
    x = 63,402.66/253.04
  6. Step 6: Final answer
    x = 250.56

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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.