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Finding the Fourth Proportional to 248.04, 342.36 and 154.84

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Solution

The fourth proportional to 248.04, 342.36 and 154.84 is: 213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.04 : 342.36 = 154.84 : x
  2. Step 2: Convert to fraction form
    248.04/342.36 = 154.84/x
  3. Step 3: Cross multiply
    248.04x = 342.36 × 154.84
  4. Step 4: Simplify right side
    248.04x = 53,011.02
  5. Step 5: Solve for x
    x = 53,011.02/248.04
  6. Step 6: Final answer
    x = 213.72

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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.