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Finding the Fourth Proportional to 248.42, 342.82 and 148.82

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Solution

The fourth proportional to 248.42, 342.82 and 148.82 is: 205.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.42 : 342.82 = 148.82 : x
  2. Step 2: Convert to fraction form
    248.42/342.82 = 148.82/x
  3. Step 3: Cross multiply
    248.42x = 342.82 × 148.82
  4. Step 4: Simplify right side
    248.42x = 51,018.47
  5. Step 5: Solve for x
    x = 51,018.47/248.42
  6. Step 6: Final answer
    x = 205.37

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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.