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Finding the Fourth Proportional to 288.37, 397.79 and 183.43

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Solution

The fourth proportional to 288.37, 397.79 and 183.43 is: 253.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.37 : 397.79 = 183.43 : x
  2. Step 2: Convert to fraction form
    288.37/397.79 = 183.43/x
  3. Step 3: Cross multiply
    288.37x = 397.79 × 183.43
  4. Step 4: Simplify right side
    288.37x = 72,966.89
  5. Step 5: Solve for x
    x = 72,966.89/288.37
  6. Step 6: Final answer
    x = 253.03

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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.