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Finding the Fourth Proportional to 655.11, 979.11 and 603.22

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Solution

The fourth proportional to 655.11, 979.11 and 603.22 is: 901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.11 : 979.11 = 603.22 : x
  2. Step 2: Convert to fraction form
    655.11/979.11 = 603.22/x
  3. Step 3: Cross multiply
    655.11x = 979.11 × 603.22
  4. Step 4: Simplify right side
    655.11x = 590,618.73
  5. Step 5: Solve for x
    x = 590,618.73/655.11
  6. Step 6: Final answer
    x = 901.56

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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.