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Finding the Fourth Proportional to 552.59, 828.62 and 321.54

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Solution

The fourth proportional to 552.59, 828.62 and 321.54 is: 482.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.59 : 828.62 = 321.54 : x
  2. Step 2: Convert to fraction form
    552.59/828.62 = 321.54/x
  3. Step 3: Cross multiply
    552.59x = 828.62 × 321.54
  4. Step 4: Simplify right side
    552.59x = 266,439.54
  5. Step 5: Solve for x
    x = 266,439.54/552.59
  6. Step 6: Final answer
    x = 482.16

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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.