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Finding the Fourth Proportional to 707.44, 1,060.82 and 220.49

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Solution

The fourth proportional to 707.44, 1,060.82 and 220.49 is: 330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.44 : 1,060.82 = 220.49 : x
  2. Step 2: Convert to fraction form
    707.44/1,060.82 = 220.49/x
  3. Step 3: Cross multiply
    707.44x = 1,060.82 × 220.49
  4. Step 4: Simplify right side
    707.44x = 233,899.10
  5. Step 5: Solve for x
    x = 233,899.10/707.44
  6. Step 6: Final answer
    x = 330.63

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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.