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Finding the Fourth Proportional to 308.10, 461.94 and 125.40

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Solution

The fourth proportional to 308.10, 461.94 and 125.40 is: 188.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.10 : 461.94 = 125.40 : x
  2. Step 2: Convert to fraction form
    308.10/461.94 = 125.40/x
  3. Step 3: Cross multiply
    308.10x = 461.94 × 125.40
  4. Step 4: Simplify right side
    308.10x = 57,927.28
  5. Step 5: Solve for x
    x = 57,927.28/308.10
  6. Step 6: Final answer
    x = 188.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.