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Finding the Fourth Proportional to 800.53, 1,103.20 and 534.67

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Solution

The fourth proportional to 800.53, 1,103.20 and 534.67 is: 736.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.53 : 1,103.20 = 534.67 : x
  2. Step 2: Convert to fraction form
    800.53/1,103.20 = 534.67/x
  3. Step 3: Cross multiply
    800.53x = 1,103.20 × 534.67
  4. Step 4: Simplify right side
    800.53x = 589,847.94
  5. Step 5: Solve for x
    x = 589,847.94/800.53
  6. Step 6: Final answer
    x = 736.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.