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Finding the Fourth Proportional to 275.84, 383.36 and 272.96

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Solution

The fourth proportional to 275.84, 383.36 and 272.96 is: 379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.84 : 383.36 = 272.96 : x
  2. Step 2: Convert to fraction form
    275.84/383.36 = 272.96/x
  3. Step 3: Cross multiply
    275.84x = 383.36 × 272.96
  4. Step 4: Simplify right side
    275.84x = 104,641.95
  5. Step 5: Solve for x
    x = 104,641.95/275.84
  6. Step 6: Final answer
    x = 379.36

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.