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Finding the Fourth Proportional to 248.03, 342.28 and 137.51

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Solution

The fourth proportional to 248.03, 342.28 and 137.51 is: 189.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.03 : 342.28 = 137.51 : x
  2. Step 2: Convert to fraction form
    248.03/342.28 = 137.51/x
  3. Step 3: Cross multiply
    248.03x = 342.28 × 137.51
  4. Step 4: Simplify right side
    248.03x = 47,064.52
  5. Step 5: Solve for x
    x = 47,064.52/248.03
  6. Step 6: Final answer
    x = 189.75

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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.