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Finding the Fourth Proportional to 1,200.84, 1,799.88 and 653.49

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Solution

The fourth proportional to 1,200.84, 1,799.88 and 653.49 is: 979.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.84 : 1,799.88 = 653.49 : x
  2. Step 2: Convert to fraction form
    1,200.84/1,799.88 = 653.49/x
  3. Step 3: Cross multiply
    1,200.84x = 1,799.88 × 653.49
  4. Step 4: Simplify right side
    1,200.84x = 1,176,203.58
  5. Step 5: Solve for x
    x = 1,176,203.58/1,200.84
  6. Step 6: Final answer
    x = 979.48

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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.