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Finding the Fourth Proportional to 751.04, 1,128.61 and 701.83

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Solution

The fourth proportional to 751.04, 1,128.61 and 701.83 is: 1,054.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.04 : 1,128.61 = 701.83 : x
  2. Step 2: Convert to fraction form
    751.04/1,128.61 = 701.83/x
  3. Step 3: Cross multiply
    751.04x = 1,128.61 × 701.83
  4. Step 4: Simplify right side
    751.04x = 792,092.36
  5. Step 5: Solve for x
    x = 792,092.36/751.04
  6. Step 6: Final answer
    x = 1,054.66

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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.