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Finding the Fourth Proportional to 655.59, 983.69 and 347.59

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Solution

The fourth proportional to 655.59, 983.69 and 347.59 is: 521.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.59 : 983.69 = 347.59 : x
  2. Step 2: Convert to fraction form
    655.59/983.69 = 347.59/x
  3. Step 3: Cross multiply
    655.59x = 983.69 × 347.59
  4. Step 4: Simplify right side
    655.59x = 341,923.56
  5. Step 5: Solve for x
    x = 341,923.56/655.59
  6. Step 6: Final answer
    x = 521.55

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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.