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Finding the Fourth Proportional to 551.22, 826.91 and 259.02

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Solution

The fourth proportional to 551.22, 826.91 and 259.02 is: 388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.22 : 826.91 = 259.02 : x
  2. Step 2: Convert to fraction form
    551.22/826.91 = 259.02/x
  3. Step 3: Cross multiply
    551.22x = 826.91 × 259.02
  4. Step 4: Simplify right side
    551.22x = 214,184.93
  5. Step 5: Solve for x
    x = 214,184.93/551.22
  6. Step 6: Final answer
    x = 388.57

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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.