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Finding the Fourth Proportional to 288.07, 432.15 and 166.26

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Solution

The fourth proportional to 288.07, 432.15 and 166.26 is: 249.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.07 : 432.15 = 166.26 : x
  2. Step 2: Convert to fraction form
    288.07/432.15 = 166.26/x
  3. Step 3: Cross multiply
    288.07x = 432.15 × 166.26
  4. Step 4: Simplify right side
    288.07x = 71,849.26
  5. Step 5: Solve for x
    x = 71,849.26/288.07
  6. Step 6: Final answer
    x = 249.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.