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Finding the Fourth Proportional to 269.24, 370.71 and 258.15

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Solution

The fourth proportional to 269.24, 370.71 and 258.15 is: 355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.24 : 370.71 = 258.15 : x
  2. Step 2: Convert to fraction form
    269.24/370.71 = 258.15/x
  3. Step 3: Cross multiply
    269.24x = 370.71 × 258.15
  4. Step 4: Simplify right side
    269.24x = 95,698.79
  5. Step 5: Solve for x
    x = 95,698.79/269.24
  6. Step 6: Final answer
    x = 355.45

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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.