Home / 1,214.26-1,821.40-336.77

Finding the Fourth Proportional to 1,214.26, 1,821.40 and 336.77

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Solution

The fourth proportional to 1,214.26, 1,821.40 and 336.77 is: 505.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.26 : 1,821.40 = 336.77 : x
  2. Step 2: Convert to fraction form
    1,214.26/1,821.40 = 336.77/x
  3. Step 3: Cross multiply
    1,214.26x = 1,821.40 × 336.77
  4. Step 4: Simplify right side
    1,214.26x = 613,401.90
  5. Step 5: Solve for x
    x = 613,401.90/1,214.26
  6. Step 6: Final answer
    x = 505.17

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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.