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Finding the Fourth Proportional to 308, 424.89 and 183.62

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Solution

The fourth proportional to 308, 424.89 and 183.62 is: 253.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    308 : 424.89 = 183.62 : x
  2. Step 2: Convert to fraction form
    308/424.89 = 183.62/x
  3. Step 3: Cross multiply
    308x = 424.89 × 183.62
  4. Step 4: Simplify right side
    308x = 78,018.30
  5. Step 5: Solve for x
    x = 78,018.30/308
  6. Step 6: Final answer
    x = 253.31

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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.