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Finding the Fourth Proportional to 608.28, 839.84 and 477.04

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Solution

The fourth proportional to 608.28, 839.84 and 477.04 is: 658.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.28 : 839.84 = 477.04 : x
  2. Step 2: Convert to fraction form
    608.28/839.84 = 477.04/x
  3. Step 3: Cross multiply
    608.28x = 839.84 × 477.04
  4. Step 4: Simplify right side
    608.28x = 400,637.27
  5. Step 5: Solve for x
    x = 400,637.27/608.28
  6. Step 6: Final answer
    x = 658.64

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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.