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Finding the Fourth Proportional to 491.66, 737.42 and 126.44

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Solution

The fourth proportional to 491.66, 737.42 and 126.44 is: 189.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.66 : 737.42 = 126.44 : x
  2. Step 2: Convert to fraction form
    491.66/737.42 = 126.44/x
  3. Step 3: Cross multiply
    491.66x = 737.42 × 126.44
  4. Step 4: Simplify right side
    491.66x = 93,235.07
  5. Step 5: Solve for x
    x = 93,235.07/491.66
  6. Step 6: Final answer
    x = 189.63

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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.