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Finding the Fourth Proportional to 551.61, 828.02 and 277.83

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Solution

The fourth proportional to 551.61, 828.02 and 277.83 is: 417.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.61 : 828.02 = 277.83 : x
  2. Step 2: Convert to fraction form
    551.61/828.02 = 277.83/x
  3. Step 3: Cross multiply
    551.61x = 828.02 × 277.83
  4. Step 4: Simplify right side
    551.61x = 230,049.49
  5. Step 5: Solve for x
    x = 230,049.49/551.61
  6. Step 6: Final answer
    x = 417.05

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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.