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Finding the Fourth Proportional to 707.08, 1,060.22 and 321.96

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Solution

The fourth proportional to 707.08, 1,060.22 and 321.96 is: 482.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.08 : 1,060.22 = 321.96 : x
  2. Step 2: Convert to fraction form
    707.08/1,060.22 = 321.96/x
  3. Step 3: Cross multiply
    707.08x = 1,060.22 × 321.96
  4. Step 4: Simplify right side
    707.08x = 341,348.43
  5. Step 5: Solve for x
    x = 341,348.43/707.08
  6. Step 6: Final answer
    x = 482.76

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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.