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Finding the Fourth Proportional to 534.89, 800.12 and 486.83

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Solution

The fourth proportional to 534.89, 800.12 and 486.83 is: 728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.89 : 800.12 = 486.83 : x
  2. Step 2: Convert to fraction form
    534.89/800.12 = 486.83/x
  3. Step 3: Cross multiply
    534.89x = 800.12 × 486.83
  4. Step 4: Simplify right side
    534.89x = 389,515.98
  5. Step 5: Solve for x
    x = 389,515.98/534.89
  6. Step 6: Final answer
    x = 728.22

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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.