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Finding the Fourth Proportional to 307.84, 425.28 and 269.44

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Solution

The fourth proportional to 307.84, 425.28 and 269.44 is: 372.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.84 : 425.28 = 269.44 : x
  2. Step 2: Convert to fraction form
    307.84/425.28 = 269.44/x
  3. Step 3: Cross multiply
    307.84x = 425.28 × 269.44
  4. Step 4: Simplify right side
    307.84x = 114,587.44
  5. Step 5: Solve for x
    x = 114,587.44/307.84
  6. Step 6: Final answer
    x = 372.23

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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.