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Finding the Fourth Proportional to 251, 346.40 and 147.52

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Solution

The fourth proportional to 251, 346.40 and 147.52 is: 203.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    251 : 346.40 = 147.52 : x
  2. Step 2: Convert to fraction form
    251/346.40 = 147.52/x
  3. Step 3: Cross multiply
    251x = 346.40 × 147.52
  4. Step 4: Simplify right side
    251x = 51,100.93
  5. Step 5: Solve for x
    x = 51,100.93/251
  6. Step 6: Final answer
    x = 203.59

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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.