Home / 1,218.43-1,827.60-488.22

Finding the Fourth Proportional to 1,218.43, 1,827.60 and 488.22

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Solution

The fourth proportional to 1,218.43, 1,827.60 and 488.22 is: 732.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.43 : 1,827.60 = 488.22 : x
  2. Step 2: Convert to fraction form
    1,218.43/1,827.60 = 488.22/x
  3. Step 3: Cross multiply
    1,218.43x = 1,827.60 × 488.22
  4. Step 4: Simplify right side
    1,218.43x = 892,270.87
  5. Step 5: Solve for x
    x = 892,270.87/1,218.43
  6. Step 6: Final answer
    x = 732.31

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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.