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Finding the Fourth Proportional to 248.02, 342.31 and 148.47

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Solution

The fourth proportional to 248.02, 342.31 and 148.47 is: 204.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.02 : 342.31 = 148.47 : x
  2. Step 2: Convert to fraction form
    248.02/342.31 = 148.47/x
  3. Step 3: Cross multiply
    248.02x = 342.31 × 148.47
  4. Step 4: Simplify right side
    248.02x = 50,822.77
  5. Step 5: Solve for x
    x = 50,822.77/248.02
  6. Step 6: Final answer
    x = 204.91

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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.