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Finding the Fourth Proportional to 850.83, 1,274.45 and 503.79

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Solution

The fourth proportional to 850.83, 1,274.45 and 503.79 is: 754.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.83 : 1,274.45 = 503.79 : x
  2. Step 2: Convert to fraction form
    850.83/1,274.45 = 503.79/x
  3. Step 3: Cross multiply
    850.83x = 1,274.45 × 503.79
  4. Step 4: Simplify right side
    850.83x = 642,052.65
  5. Step 5: Solve for x
    x = 642,052.65/850.83
  6. Step 6: Final answer
    x = 754.62

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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.