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Finding the Fourth Proportional to 608.67, 839.07 and 477.45

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Solution

The fourth proportional to 608.67, 839.07 and 477.45 is: 658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.67 : 839.07 = 477.45 : x
  2. Step 2: Convert to fraction form
    608.67/839.07 = 477.45/x
  3. Step 3: Cross multiply
    608.67x = 839.07 × 477.45
  4. Step 4: Simplify right side
    608.67x = 400,613.97
  5. Step 5: Solve for x
    x = 400,613.97/608.67
  6. Step 6: Final answer
    x = 658.18

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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.