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Finding the Fourth Proportional to 544.56, 816.48 and 215.39

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Solution

The fourth proportional to 544.56, 816.48 and 215.39 is: 322.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.56 : 816.48 = 215.39 : x
  2. Step 2: Convert to fraction form
    544.56/816.48 = 215.39/x
  3. Step 3: Cross multiply
    544.56x = 816.48 × 215.39
  4. Step 4: Simplify right side
    544.56x = 175,863.67
  5. Step 5: Solve for x
    x = 175,863.67/544.56
  6. Step 6: Final answer
    x = 322.95

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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.