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Finding the Fourth Proportional to 544.51, 816.87 and 220.11

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Solution

The fourth proportional to 544.51, 816.87 and 220.11 is: 330.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.51 : 816.87 = 220.11 : x
  2. Step 2: Convert to fraction form
    544.51/816.87 = 220.11/x
  3. Step 3: Cross multiply
    544.51x = 816.87 × 220.11
  4. Step 4: Simplify right side
    544.51x = 179,801.26
  5. Step 5: Solve for x
    x = 179,801.26/544.51
  6. Step 6: Final answer
    x = 330.21

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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.