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Finding the Fourth Proportional to 1,204.44, 1,805.04 and 770.64

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Solution

The fourth proportional to 1,204.44, 1,805.04 and 770.64 is: 1,154.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.44 : 1,805.04 = 770.64 : x
  2. Step 2: Convert to fraction form
    1,204.44/1,805.04 = 770.64/x
  3. Step 3: Cross multiply
    1,204.44x = 1,805.04 × 770.64
  4. Step 4: Simplify right side
    1,204.44x = 1,391,036.03
  5. Step 5: Solve for x
    x = 1,391,036.03/1,204.44
  6. Step 6: Final answer
    x = 1,154.92

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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.