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Finding the Fourth Proportional to 342.72, 473.22 and 211.95

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Solution

The fourth proportional to 342.72, 473.22 and 211.95 is: 292.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.72 : 473.22 = 211.95 : x
  2. Step 2: Convert to fraction form
    342.72/473.22 = 211.95/x
  3. Step 3: Cross multiply
    342.72x = 473.22 × 211.95
  4. Step 4: Simplify right side
    342.72x = 100,298.98
  5. Step 5: Solve for x
    x = 100,298.98/342.72
  6. Step 6: Final answer
    x = 292.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.