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Finding the Fourth Proportional to 751.15, 1,034.22 and 662.32

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Solution

The fourth proportional to 751.15, 1,034.22 and 662.32 is: 911.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.15 : 1,034.22 = 662.32 : x
  2. Step 2: Convert to fraction form
    751.15/1,034.22 = 662.32/x
  3. Step 3: Cross multiply
    751.15x = 1,034.22 × 662.32
  4. Step 4: Simplify right side
    751.15x = 684,984.59
  5. Step 5: Solve for x
    x = 684,984.59/751.15
  6. Step 6: Final answer
    x = 911.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.