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Finding the Fourth Proportional to 740.49, 1,110.33 and 220.34

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Solution

The fourth proportional to 740.49, 1,110.33 and 220.34 is: 330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.49 : 1,110.33 = 220.34 : x
  2. Step 2: Convert to fraction form
    740.49/1,110.33 = 220.34/x
  3. Step 3: Cross multiply
    740.49x = 1,110.33 × 220.34
  4. Step 4: Simplify right side
    740.49x = 244,644.56
  5. Step 5: Solve for x
    x = 244,644.56/740.49
  6. Step 6: Final answer
    x = 330.38

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1.5x scale

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.