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Finding the Fourth Proportional to 551, 825.47 and 276.77

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Solution

The fourth proportional to 551, 825.47 and 276.77 is: 414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    551 : 825.47 = 276.77 : x
  2. Step 2: Convert to fraction form
    551/825.47 = 276.77/x
  3. Step 3: Cross multiply
    551x = 825.47 × 276.77
  4. Step 4: Simplify right side
    551x = 228,465.33
  5. Step 5: Solve for x
    x = 228,465.33/551
  6. Step 6: Final answer
    x = 414.64

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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.