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Finding the Fourth Proportional to 544.51, 817.10 and 215.39

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Solution

The fourth proportional to 544.51, 817.10 and 215.39 is: 323.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.51 : 817.10 = 215.39 : x
  2. Step 2: Convert to fraction form
    544.51/817.10 = 215.39/x
  3. Step 3: Cross multiply
    544.51x = 817.10 × 215.39
  4. Step 4: Simplify right side
    544.51x = 175,996.81
  5. Step 5: Solve for x
    x = 175,996.81/544.51
  6. Step 6: Final answer
    x = 323.22

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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.