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Finding the Fourth Proportional to 1,408.03, 2,111.99 and 483.62

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Solution

The fourth proportional to 1,408.03, 2,111.99 and 483.62 is: 725.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.03 : 2,111.99 = 483.62 : x
  2. Step 2: Convert to fraction form
    1,408.03/2,111.99 = 483.62/x
  3. Step 3: Cross multiply
    1,408.03x = 2,111.99 × 483.62
  4. Step 4: Simplify right side
    1,408.03x = 1,021,403.47
  5. Step 5: Solve for x
    x = 1,021,403.47/1,408.03
  6. Step 6: Final answer
    x = 725.41

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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.