Home / 1,215.25-1,823.36-484.79

Finding the Fourth Proportional to 1,215.25, 1,823.36 and 484.79

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Solution

The fourth proportional to 1,215.25, 1,823.36 and 484.79 is: 727.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.25 : 1,823.36 = 484.79 : x
  2. Step 2: Convert to fraction form
    1,215.25/1,823.36 = 484.79/x
  3. Step 3: Cross multiply
    1,215.25x = 1,823.36 × 484.79
  4. Step 4: Simplify right side
    1,215.25x = 883,937.88
  5. Step 5: Solve for x
    x = 883,937.88/1,215.25
  6. Step 6: Final answer
    x = 727.37

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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.