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Finding the Fourth Proportional to 845.75, 1,268.55 and 229.52

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Solution

The fourth proportional to 845.75, 1,268.55 and 229.52 is: 344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.75 : 1,268.55 = 229.52 : x
  2. Step 2: Convert to fraction form
    845.75/1,268.55 = 229.52/x
  3. Step 3: Cross multiply
    845.75x = 1,268.55 × 229.52
  4. Step 4: Simplify right side
    845.75x = 291,160.77
  5. Step 5: Solve for x
    x = 291,160.77/845.75
  6. Step 6: Final answer
    x = 344.26

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Double scale
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1.5x scale

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.