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Finding the Fourth Proportional to 845.97, 1,269.23 and 435.41

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Solution

The fourth proportional to 845.97, 1,269.23 and 435.41 is: 653.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.97 : 1,269.23 = 435.41 : x
  2. Step 2: Convert to fraction form
    845.97/1,269.23 = 435.41/x
  3. Step 3: Cross multiply
    845.97x = 1,269.23 × 435.41
  4. Step 4: Simplify right side
    845.97x = 552,626.91
  5. Step 5: Solve for x
    x = 552,626.91/845.97
  6. Step 6: Final answer
    x = 653.25

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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.