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Finding the Fourth Proportional to 308.06, 424.96 and 183.64

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Solution

The fourth proportional to 308.06, 424.96 and 183.64 is: 253.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.06 : 424.96 = 183.64 : x
  2. Step 2: Convert to fraction form
    308.06/424.96 = 183.64/x
  3. Step 3: Cross multiply
    308.06x = 424.96 × 183.64
  4. Step 4: Simplify right side
    308.06x = 78,038.13
  5. Step 5: Solve for x
    x = 78,038.13/308.06
  6. Step 6: Final answer
    x = 253.32

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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.