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Finding the Fourth Proportional to 248.55, 342.95 and 148.94

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Solution

The fourth proportional to 248.55, 342.95 and 148.94 is: 205.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.55 : 342.95 = 148.94 : x
  2. Step 2: Convert to fraction form
    248.55/342.95 = 148.94/x
  3. Step 3: Cross multiply
    248.55x = 342.95 × 148.94
  4. Step 4: Simplify right side
    248.55x = 51,076.51
  5. Step 5: Solve for x
    x = 51,076.51/248.55
  6. Step 6: Final answer
    x = 205.50

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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.