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Finding the Fourth Proportional to 1,076.05, 1,613.60 and 306.37

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Solution

The fourth proportional to 1,076.05, 1,613.60 and 306.37 is: 459.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.05 : 1,613.60 = 306.37 : x
  2. Step 2: Convert to fraction form
    1,076.05/1,613.60 = 306.37/x
  3. Step 3: Cross multiply
    1,076.05x = 1,613.60 × 306.37
  4. Step 4: Simplify right side
    1,076.05x = 494,357.10
  5. Step 5: Solve for x
    x = 494,357.10/1,076.05
  6. Step 6: Final answer
    x = 459.42

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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.