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Finding the Fourth Proportional to 552.22, 827.61 and 357.40

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Solution

The fourth proportional to 552.22, 827.61 and 357.40 is: 535.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.22 : 827.61 = 357.40 : x
  2. Step 2: Convert to fraction form
    552.22/827.61 = 357.40/x
  3. Step 3: Cross multiply
    552.22x = 827.61 × 357.40
  4. Step 4: Simplify right side
    552.22x = 295,787.81
  5. Step 5: Solve for x
    x = 295,787.81/552.22
  6. Step 6: Final answer
    x = 535.63

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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.