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Finding the Fourth Proportional to 341.20, 471.18 and 279.10

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Solution

The fourth proportional to 341.20, 471.18 and 279.10 is: 385.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.20 : 471.18 = 279.10 : x
  2. Step 2: Convert to fraction form
    341.20/471.18 = 279.10/x
  3. Step 3: Cross multiply
    341.20x = 471.18 × 279.10
  4. Step 4: Simplify right side
    341.20x = 131,506.34
  5. Step 5: Solve for x
    x = 131,506.34/341.20
  6. Step 6: Final answer
    x = 385.42

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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.