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Finding the Fourth Proportional to 1,231.86, 1,847.91 and 410.19

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Solution

The fourth proportional to 1,231.86, 1,847.91 and 410.19 is: 615.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.86 : 1,847.91 = 410.19 : x
  2. Step 2: Convert to fraction form
    1,231.86/1,847.91 = 410.19/x
  3. Step 3: Cross multiply
    1,231.86x = 1,847.91 × 410.19
  4. Step 4: Simplify right side
    1,231.86x = 757,994.20
  5. Step 5: Solve for x
    x = 757,994.20/1,231.86
  6. Step 6: Final answer
    x = 615.32

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Double scale
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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.