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Finding the Fourth Proportional to 1,100.64, 1,651.08 and 551.46

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Solution

The fourth proportional to 1,100.64, 1,651.08 and 551.46 is: 827.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.64 : 1,651.08 = 551.46 : x
  2. Step 2: Convert to fraction form
    1,100.64/1,651.08 = 551.46/x
  3. Step 3: Cross multiply
    1,100.64x = 1,651.08 × 551.46
  4. Step 4: Simplify right side
    1,100.64x = 910,504.58
  5. Step 5: Solve for x
    x = 910,504.58/1,100.64
  6. Step 6: Final answer
    x = 827.25

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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.