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Finding the Fourth Proportional to 934.58, 1,289.19 and 584.66

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Solution

The fourth proportional to 934.58, 1,289.19 and 584.66 is: 806.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.58 : 1,289.19 = 584.66 : x
  2. Step 2: Convert to fraction form
    934.58/1,289.19 = 584.66/x
  3. Step 3: Cross multiply
    934.58x = 1,289.19 × 584.66
  4. Step 4: Simplify right side
    934.58x = 753,737.83
  5. Step 5: Solve for x
    x = 753,737.83/934.58
  6. Step 6: Final answer
    x = 806.50

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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.