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Finding the Fourth Proportional to 660.81, 984.24 and 626.12

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Solution

The fourth proportional to 660.81, 984.24 and 626.12 is: 932.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.81 : 984.24 = 626.12 : x
  2. Step 2: Convert to fraction form
    660.81/984.24 = 626.12/x
  3. Step 3: Cross multiply
    660.81x = 984.24 × 626.12
  4. Step 4: Simplify right side
    660.81x = 616,252.35
  5. Step 5: Solve for x
    x = 616,252.35/660.81
  6. Step 6: Final answer
    x = 932.57

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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.