Home / 1,213.48-1,821.29-483.57

Finding the Fourth Proportional to 1,213.48, 1,821.29 and 483.57

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Solution

The fourth proportional to 1,213.48, 1,821.29 and 483.57 is: 725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.48 : 1,821.29 = 483.57 : x
  2. Step 2: Convert to fraction form
    1,213.48/1,821.29 = 483.57/x
  3. Step 3: Cross multiply
    1,213.48x = 1,821.29 × 483.57
  4. Step 4: Simplify right side
    1,213.48x = 880,718.79
  5. Step 5: Solve for x
    x = 880,718.79/1,213.48
  6. Step 6: Final answer
    x = 725.78

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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.