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Finding the Fourth Proportional to 733.90, 1,100.45 and 322.56

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Solution

The fourth proportional to 733.90, 1,100.45 and 322.56 is: 483.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.90 : 1,100.45 = 322.56 : x
  2. Step 2: Convert to fraction form
    733.90/1,100.45 = 322.56/x
  3. Step 3: Cross multiply
    733.90x = 1,100.45 × 322.56
  4. Step 4: Simplify right side
    733.90x = 354,961.15
  5. Step 5: Solve for x
    x = 354,961.15/733.90
  6. Step 6: Final answer
    x = 483.67

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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.