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Finding the Fourth Proportional to 551.16, 826.42 and 262.60

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Solution

The fourth proportional to 551.16, 826.42 and 262.60 is: 393.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.16 : 826.42 = 262.60 : x
  2. Step 2: Convert to fraction form
    551.16/826.42 = 262.60/x
  3. Step 3: Cross multiply
    551.16x = 826.42 × 262.60
  4. Step 4: Simplify right side
    551.16x = 217,017.89
  5. Step 5: Solve for x
    x = 217,017.89/551.16
  6. Step 6: Final answer
    x = 393.75

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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.