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Finding the Fourth Proportional to 342.95, 473.12 and 211.88

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Solution

The fourth proportional to 342.95, 473.12 and 211.88 is: 292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.95 : 473.12 = 211.88 : x
  2. Step 2: Convert to fraction form
    342.95/473.12 = 211.88/x
  3. Step 3: Cross multiply
    342.95x = 473.12 × 211.88
  4. Step 4: Simplify right side
    342.95x = 100,241.24
  5. Step 5: Solve for x
    x = 100,241.24/342.95
  6. Step 6: Final answer
    x = 292.30

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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.