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Finding the Fourth Proportional to 291.57, 437.44 and 126.94

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Solution

The fourth proportional to 291.57, 437.44 and 126.94 is: 190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.57 : 437.44 = 126.94 : x
  2. Step 2: Convert to fraction form
    291.57/437.44 = 126.94/x
  3. Step 3: Cross multiply
    291.57x = 437.44 × 126.94
  4. Step 4: Simplify right side
    291.57x = 55,528.63
  5. Step 5: Solve for x
    x = 55,528.63/291.57
  6. Step 6: Final answer
    x = 190.45

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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.