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Finding the Fourth Proportional to 341.96, 471.84 and 211

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Solution

The fourth proportional to 341.96, 471.84 and 211 is: 291.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.96 : 471.84 = 211 : x
  2. Step 2: Convert to fraction form
    341.96/471.84 = 211/x
  3. Step 3: Cross multiply
    341.96x = 471.84 × 211
  4. Step 4: Simplify right side
    341.96x = 99,558.24
  5. Step 5: Solve for x
    x = 99,558.24/341.96
  6. Step 6: Final answer
    x = 291.14

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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.