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Finding the Fourth Proportional to 456.41, 684.60 and 127.37

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Solution

The fourth proportional to 456.41, 684.60 and 127.37 is: 191.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.41 : 684.60 = 127.37 : x
  2. Step 2: Convert to fraction form
    456.41/684.60 = 127.37/x
  3. Step 3: Cross multiply
    456.41x = 684.60 × 127.37
  4. Step 4: Simplify right side
    456.41x = 87,197.50
  5. Step 5: Solve for x
    x = 87,197.50/456.41
  6. Step 6: Final answer
    x = 191.05

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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.