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Finding the Fourth Proportional to 850.33, 1,274.99 and 265.16

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Solution

The fourth proportional to 850.33, 1,274.99 and 265.16 is: 397.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.33 : 1,274.99 = 265.16 : x
  2. Step 2: Convert to fraction form
    850.33/1,274.99 = 265.16/x
  3. Step 3: Cross multiply
    850.33x = 1,274.99 × 265.16
  4. Step 4: Simplify right side
    850.33x = 338,076.35
  5. Step 5: Solve for x
    x = 338,076.35/850.33
  6. Step 6: Final answer
    x = 397.58

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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.