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Finding the Fourth Proportional to 645.17, 969.37 and 606.29

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Solution

The fourth proportional to 645.17, 969.37 and 606.29 is: 910.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.17 : 969.37 = 606.29 : x
  2. Step 2: Convert to fraction form
    645.17/969.37 = 606.29/x
  3. Step 3: Cross multiply
    645.17x = 969.37 × 606.29
  4. Step 4: Simplify right side
    645.17x = 587,712.97
  5. Step 5: Solve for x
    x = 587,712.97/645.17
  6. Step 6: Final answer
    x = 910.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.