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Finding the Fourth Proportional to 608.45, 839.57 and 359.81

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Solution

The fourth proportional to 608.45, 839.57 and 359.81 is: 496.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.45 : 839.57 = 359.81 : x
  2. Step 2: Convert to fraction form
    608.45/839.57 = 359.81/x
  3. Step 3: Cross multiply
    608.45x = 839.57 × 359.81
  4. Step 4: Simplify right side
    608.45x = 302,079.68
  5. Step 5: Solve for x
    x = 302,079.68/608.45
  6. Step 6: Final answer
    x = 496.48

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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.