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Finding the Fourth Proportional to 505.28, 757.71 and 180.47

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Solution

The fourth proportional to 505.28, 757.71 and 180.47 is: 270.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.28 : 757.71 = 180.47 : x
  2. Step 2: Convert to fraction form
    505.28/757.71 = 180.47/x
  3. Step 3: Cross multiply
    505.28x = 757.71 × 180.47
  4. Step 4: Simplify right side
    505.28x = 136,740.14
  5. Step 5: Solve for x
    x = 136,740.14/505.28
  6. Step 6: Final answer
    x = 270.63

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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.