Home / 1,086.18-1,629.26-306.18

Finding the Fourth Proportional to 1,086.18, 1,629.26 and 306.18

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Solution

The fourth proportional to 1,086.18, 1,629.26 and 306.18 is: 459.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.18 : 1,629.26 = 306.18 : x
  2. Step 2: Convert to fraction form
    1,086.18/1,629.26 = 306.18/x
  3. Step 3: Cross multiply
    1,086.18x = 1,629.26 × 306.18
  4. Step 4: Simplify right side
    1,086.18x = 498,841.48
  5. Step 5: Solve for x
    x = 498,841.48/1,086.18
  6. Step 6: Final answer
    x = 459.26

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Double scale
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1.5x scale

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.