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Finding the Fourth Proportional to 279.84, 385.06 and 271.82

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Solution

The fourth proportional to 279.84, 385.06 and 271.82 is: 374.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.84 : 385.06 = 271.82 : x
  2. Step 2: Convert to fraction form
    279.84/385.06 = 271.82/x
  3. Step 3: Cross multiply
    279.84x = 385.06 × 271.82
  4. Step 4: Simplify right side
    279.84x = 104,667.01
  5. Step 5: Solve for x
    x = 104,667.01/279.84
  6. Step 6: Final answer
    x = 374.02

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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.