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Finding the Fourth Proportional to 344.10, 474.85 and 213.11

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Solution

The fourth proportional to 344.10, 474.85 and 213.11 is: 294.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.10 : 474.85 = 213.11 : x
  2. Step 2: Convert to fraction form
    344.10/474.85 = 213.11/x
  3. Step 3: Cross multiply
    344.10x = 474.85 × 213.11
  4. Step 4: Simplify right side
    344.10x = 101,191.84
  5. Step 5: Solve for x
    x = 101,191.84/344.10
  6. Step 6: Final answer
    x = 294.08

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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.