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Finding the Fourth Proportional to 950.27, 1,310.62 and 618.80

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Solution

The fourth proportional to 950.27, 1,310.62 and 618.80 is: 853.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.27 : 1,310.62 = 618.80 : x
  2. Step 2: Convert to fraction form
    950.27/1,310.62 = 618.80/x
  3. Step 3: Cross multiply
    950.27x = 1,310.62 × 618.80
  4. Step 4: Simplify right side
    950.27x = 811,002.01
  5. Step 5: Solve for x
    x = 811,002.01/950.27
  6. Step 6: Final answer
    x = 853.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.