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Finding the Fourth Proportional to 655.37, 981.89 and 347.43

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Solution

The fourth proportional to 655.37, 981.89 and 347.43 is: 520.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.37 : 981.89 = 347.43 : x
  2. Step 2: Convert to fraction form
    655.37/981.89 = 347.43/x
  3. Step 3: Cross multiply
    655.37x = 981.89 × 347.43
  4. Step 4: Simplify right side
    655.37x = 341,141.29
  5. Step 5: Solve for x
    x = 341,141.29/655.37
  6. Step 6: Final answer
    x = 520.53

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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.