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Finding the Fourth Proportional to 701.11, 967.58 and 390.61

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Solution

The fourth proportional to 701.11, 967.58 and 390.61 is: 539.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.11 : 967.58 = 390.61 : x
  2. Step 2: Convert to fraction form
    701.11/967.58 = 390.61/x
  3. Step 3: Cross multiply
    701.11x = 967.58 × 390.61
  4. Step 4: Simplify right side
    701.11x = 377,946.42
  5. Step 5: Solve for x
    x = 377,946.42/701.11
  6. Step 6: Final answer
    x = 539.07

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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.