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Finding the Fourth Proportional to 309.41, 463.90 and 124.19

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Solution

The fourth proportional to 309.41, 463.90 and 124.19 is: 186.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.41 : 463.90 = 124.19 : x
  2. Step 2: Convert to fraction form
    309.41/463.90 = 124.19/x
  3. Step 3: Cross multiply
    309.41x = 463.90 × 124.19
  4. Step 4: Simplify right side
    309.41x = 57,611.74
  5. Step 5: Solve for x
    x = 57,611.74/309.41
  6. Step 6: Final answer
    x = 186.20

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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.