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Finding the Fourth Proportional to 734.55, 1,101.65 and 214.41

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Solution

The fourth proportional to 734.55, 1,101.65 and 214.41 is: 321.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.55 : 1,101.65 = 214.41 : x
  2. Step 2: Convert to fraction form
    734.55/1,101.65 = 214.41/x
  3. Step 3: Cross multiply
    734.55x = 1,101.65 × 214.41
  4. Step 4: Simplify right side
    734.55x = 236,204.78
  5. Step 5: Solve for x
    x = 236,204.78/734.55
  6. Step 6: Final answer
    x = 321.56

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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.