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Finding the Fourth Proportional to 251.18, 346.59 and 140.64

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Solution

The fourth proportional to 251.18, 346.59 and 140.64 is: 194.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.18 : 346.59 = 140.64 : x
  2. Step 2: Convert to fraction form
    251.18/346.59 = 140.64/x
  3. Step 3: Cross multiply
    251.18x = 346.59 × 140.64
  4. Step 4: Simplify right side
    251.18x = 48,743.71
  5. Step 5: Solve for x
    x = 48,743.71/251.18
  6. Step 6: Final answer
    x = 194.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.