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Finding the Fourth Proportional to 789.11, 1,088.97 and 435.02

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Solution

The fourth proportional to 789.11, 1,088.97 and 435.02 is: 600.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.11 : 1,088.97 = 435.02 : x
  2. Step 2: Convert to fraction form
    789.11/1,088.97 = 435.02/x
  3. Step 3: Cross multiply
    789.11x = 1,088.97 × 435.02
  4. Step 4: Simplify right side
    789.11x = 473,726.45
  5. Step 5: Solve for x
    x = 473,726.45/789.11
  6. Step 6: Final answer
    x = 600.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.