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Finding the Fourth Proportional to 544.36, 815.85 and 325.15

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Solution

The fourth proportional to 544.36, 815.85 and 325.15 is: 487.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.36 : 815.85 = 325.15 : x
  2. Step 2: Convert to fraction form
    544.36/815.85 = 325.15/x
  3. Step 3: Cross multiply
    544.36x = 815.85 × 325.15
  4. Step 4: Simplify right side
    544.36x = 265,271.01
  5. Step 5: Solve for x
    x = 265,271.01/544.36
  6. Step 6: Final answer
    x = 487.31

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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.