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Finding the Fourth Proportional to 655.02, 984.15 and 620.19

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Solution

The fourth proportional to 655.02, 984.15 and 620.19 is: 931.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.02 : 984.15 = 620.19 : x
  2. Step 2: Convert to fraction form
    655.02/984.15 = 620.19/x
  3. Step 3: Cross multiply
    655.02x = 984.15 × 620.19
  4. Step 4: Simplify right side
    655.02x = 610,359.99
  5. Step 5: Solve for x
    x = 610,359.99/655.02
  6. Step 6: Final answer
    x = 931.82

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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.