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Finding the Fourth Proportional to 850.18, 1,274.25 and 603

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Solution

The fourth proportional to 850.18, 1,274.25 and 603 is: 903.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.18 : 1,274.25 = 603 : x
  2. Step 2: Convert to fraction form
    850.18/1,274.25 = 603/x
  3. Step 3: Cross multiply
    850.18x = 1,274.25 × 603
  4. Step 4: Simplify right side
    850.18x = 768,372.75
  5. Step 5: Solve for x
    x = 768,372.75/850.18
  6. Step 6: Final answer
    x = 903.78

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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.