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Finding the Fourth Proportional to 544.01, 815.21 and 300.61

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Solution

The fourth proportional to 544.01, 815.21 and 300.61 is: 450.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.01 : 815.21 = 300.61 : x
  2. Step 2: Convert to fraction form
    544.01/815.21 = 300.61/x
  3. Step 3: Cross multiply
    544.01x = 815.21 × 300.61
  4. Step 4: Simplify right side
    544.01x = 245,054.70
  5. Step 5: Solve for x
    x = 245,054.70/544.01
  6. Step 6: Final answer
    x = 450.46

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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.