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Finding the Fourth Proportional to 845.60, 1,160.72 and 750.26

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Solution

The fourth proportional to 845.60, 1,160.72 and 750.26 is: 1,029.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.60 : 1,160.72 = 750.26 : x
  2. Step 2: Convert to fraction form
    845.60/1,160.72 = 750.26/x
  3. Step 3: Cross multiply
    845.60x = 1,160.72 × 750.26
  4. Step 4: Simplify right side
    845.60x = 870,841.79
  5. Step 5: Solve for x
    x = 870,841.79/845.60
  6. Step 6: Final answer
    x = 1,029.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.