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Finding the Fourth Proportional to 715.98, 1,073.70 and 222.33

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Solution

The fourth proportional to 715.98, 1,073.70 and 222.33 is: 333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.98 : 1,073.70 = 222.33 : x
  2. Step 2: Convert to fraction form
    715.98/1,073.70 = 222.33/x
  3. Step 3: Cross multiply
    715.98x = 1,073.70 × 222.33
  4. Step 4: Simplify right side
    715.98x = 238,715.72
  5. Step 5: Solve for x
    x = 238,715.72/715.98
  6. Step 6: Final answer
    x = 333.41

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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.