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Finding the Fourth Proportional to 469.46, 704.30 and 144.87

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Solution

The fourth proportional to 469.46, 704.30 and 144.87 is: 217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.46 : 704.30 = 144.87 : x
  2. Step 2: Convert to fraction form
    469.46/704.30 = 144.87/x
  3. Step 3: Cross multiply
    469.46x = 704.30 × 144.87
  4. Step 4: Simplify right side
    469.46x = 102,031.22
  5. Step 5: Solve for x
    x = 102,031.22/469.46
  6. Step 6: Final answer
    x = 217.34

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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.