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Finding the Fourth Proportional to 934.84, 1,395.65 and 789.04

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Solution

The fourth proportional to 934.84, 1,395.65 and 789.04 is: 1,177.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.84 : 1,395.65 = 789.04 : x
  2. Step 2: Convert to fraction form
    934.84/1,395.65 = 789.04/x
  3. Step 3: Cross multiply
    934.84x = 1,395.65 × 789.04
  4. Step 4: Simplify right side
    934.84x = 1,101,223.68
  5. Step 5: Solve for x
    x = 1,101,223.68/934.84
  6. Step 6: Final answer
    x = 1,177.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.