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Finding the Fourth Proportional to 607.26, 910.79 and 217.18

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Solution

The fourth proportional to 607.26, 910.79 and 217.18 is: 325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.26 : 910.79 = 217.18 : x
  2. Step 2: Convert to fraction form
    607.26/910.79 = 217.18/x
  3. Step 3: Cross multiply
    607.26x = 910.79 × 217.18
  4. Step 4: Simplify right side
    607.26x = 197,799.73
  5. Step 5: Solve for x
    x = 197,799.73/607.26
  6. Step 6: Final answer
    x = 325.72

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1.5x scale

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.