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Finding the Fourth Proportional to 655.32, 899.50 and 579.98

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Solution

The fourth proportional to 655.32, 899.50 and 579.98 is: 796.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.32 : 899.50 = 579.98 : x
  2. Step 2: Convert to fraction form
    655.32/899.50 = 579.98/x
  3. Step 3: Cross multiply
    655.32x = 899.50 × 579.98
  4. Step 4: Simplify right side
    655.32x = 521,692.01
  5. Step 5: Solve for x
    x = 521,692.01/655.32
  6. Step 6: Final answer
    x = 796.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.