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Finding the Fourth Proportional to 845.41, 1,268.10 and 434.33

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Solution

The fourth proportional to 845.41, 1,268.10 and 434.33 is: 651.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.41 : 1,268.10 = 434.33 : x
  2. Step 2: Convert to fraction form
    845.41/1,268.10 = 434.33/x
  3. Step 3: Cross multiply
    845.41x = 1,268.10 × 434.33
  4. Step 4: Simplify right side
    845.41x = 550,767.53
  5. Step 5: Solve for x
    x = 550,767.53/845.41
  6. Step 6: Final answer
    x = 651.48

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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.