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Finding the Fourth Proportional to 469.34, 704.12 and 191.72

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Solution

The fourth proportional to 469.34, 704.12 and 191.72 is: 287.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.34 : 704.12 = 191.72 : x
  2. Step 2: Convert to fraction form
    469.34/704.12 = 191.72/x
  3. Step 3: Cross multiply
    469.34x = 704.12 × 191.72
  4. Step 4: Simplify right side
    469.34x = 134,993.89
  5. Step 5: Solve for x
    x = 134,993.89/469.34
  6. Step 6: Final answer
    x = 287.62

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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.