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Finding the Fourth Proportional to 655.30, 981.64 and 567.63

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Solution

The fourth proportional to 655.30, 981.64 and 567.63 is: 850.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.30 : 981.64 = 567.63 : x
  2. Step 2: Convert to fraction form
    655.30/981.64 = 567.63/x
  3. Step 3: Cross multiply
    655.30x = 981.64 × 567.63
  4. Step 4: Simplify right side
    655.30x = 557,213.38
  5. Step 5: Solve for x
    x = 557,213.38/655.30
  6. Step 6: Final answer
    x = 850.31

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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.