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Finding the Fourth Proportional to 257.68, 355.39 and 184.04

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Solution

The fourth proportional to 257.68, 355.39 and 184.04 is: 253.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.68 : 355.39 = 184.04 : x
  2. Step 2: Convert to fraction form
    257.68/355.39 = 184.04/x
  3. Step 3: Cross multiply
    257.68x = 355.39 × 184.04
  4. Step 4: Simplify right side
    257.68x = 65,405.07
  5. Step 5: Solve for x
    x = 65,405.07/257.68
  6. Step 6: Final answer
    x = 253.82

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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.