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Finding the Fourth Proportional to 251.52, 347.08 and 140.98

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Solution

The fourth proportional to 251.52, 347.08 and 140.98 is: 194.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.52 : 347.08 = 140.98 : x
  2. Step 2: Convert to fraction form
    251.52/347.08 = 140.98/x
  3. Step 3: Cross multiply
    251.52x = 347.08 × 140.98
  4. Step 4: Simplify right side
    251.52x = 48,931.34
  5. Step 5: Solve for x
    x = 48,931.34/251.52
  6. Step 6: Final answer
    x = 194.54

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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.