Home / 1,218.89-1,828.65-488.96

Finding the Fourth Proportional to 1,218.89, 1,828.65 and 488.96

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Solution

The fourth proportional to 1,218.89, 1,828.65 and 488.96 is: 733.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.89 : 1,828.65 = 488.96 : x
  2. Step 2: Convert to fraction form
    1,218.89/1,828.65 = 488.96/x
  3. Step 3: Cross multiply
    1,218.89x = 1,828.65 × 488.96
  4. Step 4: Simplify right side
    1,218.89x = 894,136.70
  5. Step 5: Solve for x
    x = 894,136.70/1,218.89
  6. Step 6: Final answer
    x = 733.57

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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.