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Finding the Fourth Proportional to 469.89, 704.96 and 238.91

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Solution

The fourth proportional to 469.89, 704.96 and 238.91 is: 358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.89 : 704.96 = 238.91 : x
  2. Step 2: Convert to fraction form
    469.89/704.96 = 238.91/x
  3. Step 3: Cross multiply
    469.89x = 704.96 × 238.91
  4. Step 4: Simplify right side
    469.89x = 168,420.81
  5. Step 5: Solve for x
    x = 168,420.81/469.89
  6. Step 6: Final answer
    x = 358.42

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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.