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Finding the Fourth Proportional to 307.41, 461.18 and 115.03

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Solution

The fourth proportional to 307.41, 461.18 and 115.03 is: 172.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.41 : 461.18 = 115.03 : x
  2. Step 2: Convert to fraction form
    307.41/461.18 = 115.03/x
  3. Step 3: Cross multiply
    307.41x = 461.18 × 115.03
  4. Step 4: Simplify right side
    307.41x = 53,049.75
  5. Step 5: Solve for x
    x = 53,049.75/307.41
  6. Step 6: Final answer
    x = 172.57

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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.