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Finding the Fourth Proportional to 537.87, 807.21 and 249.51

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Solution

The fourth proportional to 537.87, 807.21 and 249.51 is: 374.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.87 : 807.21 = 249.51 : x
  2. Step 2: Convert to fraction form
    537.87/807.21 = 249.51/x
  3. Step 3: Cross multiply
    537.87x = 807.21 × 249.51
  4. Step 4: Simplify right side
    537.87x = 201,406.97
  5. Step 5: Solve for x
    x = 201,406.97/537.87
  6. Step 6: Final answer
    x = 374.45

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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.