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Finding the Fourth Proportional to 2,272.08, 3,408.03 and 712.05

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Solution

The fourth proportional to 2,272.08, 3,408.03 and 712.05 is: 1,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.08 : 3,408.03 = 712.05 : x
  2. Step 2: Convert to fraction form
    2,272.08/3,408.03 = 712.05/x
  3. Step 3: Cross multiply
    2,272.08x = 3,408.03 × 712.05
  4. Step 4: Simplify right side
    2,272.08x = 2,426,693.48
  5. Step 5: Solve for x
    x = 2,426,693.48/2,272.08
  6. Step 6: Final answer
    x = 1,068.05

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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.