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Finding the Fourth Proportional to 845.61, 1,268.37 and 325.51

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Solution

The fourth proportional to 845.61, 1,268.37 and 325.51 is: 488.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.61 : 1,268.37 = 325.51 : x
  2. Step 2: Convert to fraction form
    845.61/1,268.37 = 325.51/x
  3. Step 3: Cross multiply
    845.61x = 1,268.37 × 325.51
  4. Step 4: Simplify right side
    845.61x = 412,867.12
  5. Step 5: Solve for x
    x = 412,867.12/845.61
  6. Step 6: Final answer
    x = 488.25

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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.