Home / 1,218.59-1,827.68-438.44

Finding the Fourth Proportional to 1,218.59, 1,827.68 and 438.44

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Solution

The fourth proportional to 1,218.59, 1,827.68 and 438.44 is: 657.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.59 : 1,827.68 = 438.44 : x
  2. Step 2: Convert to fraction form
    1,218.59/1,827.68 = 438.44/x
  3. Step 3: Cross multiply
    1,218.59x = 1,827.68 × 438.44
  4. Step 4: Simplify right side
    1,218.59x = 801,319.15
  5. Step 5: Solve for x
    x = 801,319.15/1,218.59
  6. Step 6: Final answer
    x = 657.58

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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.