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Finding the Fourth Proportional to 552.89, 828.29 and 309.08

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Solution

The fourth proportional to 552.89, 828.29 and 309.08 is: 463.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.89 : 828.29 = 309.08 : x
  2. Step 2: Convert to fraction form
    552.89/828.29 = 309.08/x
  3. Step 3: Cross multiply
    552.89x = 828.29 × 309.08
  4. Step 4: Simplify right side
    552.89x = 256,010.72
  5. Step 5: Solve for x
    x = 256,010.72/552.89
  6. Step 6: Final answer
    x = 463.04

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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.