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Finding the Fourth Proportional to 552.05, 826.02 and 345.65

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Solution

The fourth proportional to 552.05, 826.02 and 345.65 is: 517.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.05 : 826.02 = 345.65 : x
  2. Step 2: Convert to fraction form
    552.05/826.02 = 345.65/x
  3. Step 3: Cross multiply
    552.05x = 826.02 × 345.65
  4. Step 4: Simplify right side
    552.05x = 285,509.68
  5. Step 5: Solve for x
    x = 285,509.68/552.05
  6. Step 6: Final answer
    x = 517.19

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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.