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Finding the Fourth Proportional to 291.63, 437.10 and 154.60

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Solution

The fourth proportional to 291.63, 437.10 and 154.60 is: 231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.63 : 437.10 = 154.60 : x
  2. Step 2: Convert to fraction form
    291.63/437.10 = 154.60/x
  3. Step 3: Cross multiply
    291.63x = 437.10 × 154.60
  4. Step 4: Simplify right side
    291.63x = 67,575.66
  5. Step 5: Solve for x
    x = 67,575.66/291.63
  6. Step 6: Final answer
    x = 231.72

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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.