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Finding the Fourth Proportional to 539.36, 806.86 and 448.24

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Solution

The fourth proportional to 539.36, 806.86 and 448.24 is: 670.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.36 : 806.86 = 448.24 : x
  2. Step 2: Convert to fraction form
    539.36/806.86 = 448.24/x
  3. Step 3: Cross multiply
    539.36x = 806.86 × 448.24
  4. Step 4: Simplify right side
    539.36x = 361,666.93
  5. Step 5: Solve for x
    x = 361,666.93/539.36
  6. Step 6: Final answer
    x = 670.55

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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.