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Finding the Fourth Proportional to 934.29, 1,289.37 and 535.98

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Solution

The fourth proportional to 934.29, 1,289.37 and 535.98 is: 739.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.29 : 1,289.37 = 535.98 : x
  2. Step 2: Convert to fraction form
    934.29/1,289.37 = 535.98/x
  3. Step 3: Cross multiply
    934.29x = 1,289.37 × 535.98
  4. Step 4: Simplify right side
    934.29x = 691,076.53
  5. Step 5: Solve for x
    x = 691,076.53/934.29
  6. Step 6: Final answer
    x = 739.68

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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.