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Finding the Fourth Proportional to 580.90, 800.32 and 475.99

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Solution

The fourth proportional to 580.90, 800.32 and 475.99 is: 655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.90 : 800.32 = 475.99 : x
  2. Step 2: Convert to fraction form
    580.90/800.32 = 475.99/x
  3. Step 3: Cross multiply
    580.90x = 800.32 × 475.99
  4. Step 4: Simplify right side
    580.90x = 380,944.32
  5. Step 5: Solve for x
    x = 380,944.32/580.90
  6. Step 6: Final answer
    x = 655.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.