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Finding the Fourth Proportional to 707.33, 1,061.14 and 220.42

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Solution

The fourth proportional to 707.33, 1,061.14 and 220.42 is: 330.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.33 : 1,061.14 = 220.42 : x
  2. Step 2: Convert to fraction form
    707.33/1,061.14 = 220.42/x
  3. Step 3: Cross multiply
    707.33x = 1,061.14 × 220.42
  4. Step 4: Simplify right side
    707.33x = 233,891.17
  5. Step 5: Solve for x
    x = 233,891.17/707.33
  6. Step 6: Final answer
    x = 330.67

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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.