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Finding the Fourth Proportional to 608, 839.08 and 345.96

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Solution

The fourth proportional to 608, 839.08 and 345.96 is: 477.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    608 : 839.08 = 345.96 : x
  2. Step 2: Convert to fraction form
    608/839.08 = 345.96/x
  3. Step 3: Cross multiply
    608x = 839.08 × 345.96
  4. Step 4: Simplify right side
    608x = 290,288.12
  5. Step 5: Solve for x
    x = 290,288.12/608
  6. Step 6: Final answer
    x = 477.45

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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.