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Finding the Fourth Proportional to 950.37, 1,310.69 and 618.68

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Solution

The fourth proportional to 950.37, 1,310.69 and 618.68 is: 853.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.37 : 1,310.69 = 618.68 : x
  2. Step 2: Convert to fraction form
    950.37/1,310.69 = 618.68/x
  3. Step 3: Cross multiply
    950.37x = 1,310.69 × 618.68
  4. Step 4: Simplify right side
    950.37x = 810,888.04
  5. Step 5: Solve for x
    x = 810,888.04/950.37
  6. Step 6: Final answer
    x = 853.23

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1.5x scale

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.