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Finding the Fourth Proportional to 1,201.76, 1,801.95 and 551.87

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Solution

The fourth proportional to 1,201.76, 1,801.95 and 551.87 is: 827.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.76 : 1,801.95 = 551.87 : x
  2. Step 2: Convert to fraction form
    1,201.76/1,801.95 = 551.87/x
  3. Step 3: Cross multiply
    1,201.76x = 1,801.95 × 551.87
  4. Step 4: Simplify right side
    1,201.76x = 994,442.15
  5. Step 5: Solve for x
    x = 994,442.15/1,201.76
  6. Step 6: Final answer
    x = 827.49

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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.