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Finding the Fourth Proportional to 253.08, 348.57 and 233.60

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Solution

The fourth proportional to 253.08, 348.57 and 233.60 is: 321.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.08 : 348.57 = 233.60 : x
  2. Step 2: Convert to fraction form
    253.08/348.57 = 233.60/x
  3. Step 3: Cross multiply
    253.08x = 348.57 × 233.60
  4. Step 4: Simplify right side
    253.08x = 81,424.21
  5. Step 5: Solve for x
    x = 81,424.21/253.08
  6. Step 6: Final answer
    x = 321.73

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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.