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Finding the Fourth Proportional to 914.36, 1,372.12 and 481.82

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Solution

The fourth proportional to 914.36, 1,372.12 and 481.82 is: 723.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.36 : 1,372.12 = 481.82 : x
  2. Step 2: Convert to fraction form
    914.36/1,372.12 = 481.82/x
  3. Step 3: Cross multiply
    914.36x = 1,372.12 × 481.82
  4. Step 4: Simplify right side
    914.36x = 661,114.86
  5. Step 5: Solve for x
    x = 661,114.86/914.36
  6. Step 6: Final answer
    x = 723.04

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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.