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Finding the Fourth Proportional to 291.96, 436.95 and 223.11

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Solution

The fourth proportional to 291.96, 436.95 and 223.11 is: 333.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.96 : 436.95 = 223.11 : x
  2. Step 2: Convert to fraction form
    291.96/436.95 = 223.11/x
  3. Step 3: Cross multiply
    291.96x = 436.95 × 223.11
  4. Step 4: Simplify right side
    291.96x = 97,487.91
  5. Step 5: Solve for x
    x = 97,487.91/291.96
  6. Step 6: Final answer
    x = 333.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.