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Finding the Fourth Proportional to 539.96, 810.06 and 266.18

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Solution

The fourth proportional to 539.96, 810.06 and 266.18 is: 399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.96 : 810.06 = 266.18 : x
  2. Step 2: Convert to fraction form
    539.96/810.06 = 266.18/x
  3. Step 3: Cross multiply
    539.96x = 810.06 × 266.18
  4. Step 4: Simplify right side
    539.96x = 215,621.77
  5. Step 5: Solve for x
    x = 215,621.77/539.96
  6. Step 6: Final answer
    x = 399.33

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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.