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Finding the Fourth Proportional to 288.40, 432.93 and 180.25

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Solution

The fourth proportional to 288.40, 432.93 and 180.25 is: 270.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.40 : 432.93 = 180.25 : x
  2. Step 2: Convert to fraction form
    288.40/432.93 = 180.25/x
  3. Step 3: Cross multiply
    288.40x = 432.93 × 180.25
  4. Step 4: Simplify right side
    288.40x = 78,035.63
  5. Step 5: Solve for x
    x = 78,035.63/288.40
  6. Step 6: Final answer
    x = 270.58

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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.