Home / 1,216.34-1,823.22-485.60

Finding the Fourth Proportional to 1,216.34, 1,823.22 and 485.60

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Solution

The fourth proportional to 1,216.34, 1,823.22 and 485.60 is: 727.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.34 : 1,823.22 = 485.60 : x
  2. Step 2: Convert to fraction form
    1,216.34/1,823.22 = 485.60/x
  3. Step 3: Cross multiply
    1,216.34x = 1,823.22 × 485.60
  4. Step 4: Simplify right side
    1,216.34x = 885,355.63
  5. Step 5: Solve for x
    x = 885,355.63/1,216.34
  6. Step 6: Final answer
    x = 727.88

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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.