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Finding the Fourth Proportional to 580, 799.68 and 474.96

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Solution

The fourth proportional to 580, 799.68 and 474.96 is: 654.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    580 : 799.68 = 474.96 : x
  2. Step 2: Convert to fraction form
    580/799.68 = 474.96/x
  3. Step 3: Cross multiply
    580x = 799.68 × 474.96
  4. Step 4: Simplify right side
    580x = 379,816.01
  5. Step 5: Solve for x
    x = 379,816.01/580
  6. Step 6: Final answer
    x = 654.86

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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.