Home / 1,215.39-1,822.82-484.77

Finding the Fourth Proportional to 1,215.39, 1,822.82 and 484.77

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Solution

The fourth proportional to 1,215.39, 1,822.82 and 484.77 is: 727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.39 : 1,822.82 = 484.77 : x
  2. Step 2: Convert to fraction form
    1,215.39/1,822.82 = 484.77/x
  3. Step 3: Cross multiply
    1,215.39x = 1,822.82 × 484.77
  4. Step 4: Simplify right side
    1,215.39x = 883,646.03
  5. Step 5: Solve for x
    x = 883,646.03/1,215.39
  6. Step 6: Final answer
    x = 727.05

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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.