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Finding the Fourth Proportional to 269.79, 372 and 253.89

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Solution

The fourth proportional to 269.79, 372 and 253.89 is: 350.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.79 : 372 = 253.89 : x
  2. Step 2: Convert to fraction form
    269.79/372 = 253.89/x
  3. Step 3: Cross multiply
    269.79x = 372 × 253.89
  4. Step 4: Simplify right side
    269.79x = 94,447.08
  5. Step 5: Solve for x
    x = 94,447.08/269.79
  6. Step 6: Final answer
    x = 350.08

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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.