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Finding the Fourth Proportional to 130.52, 180.23 and 108.37

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Solution

The fourth proportional to 130.52, 180.23 and 108.37 is: 149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.52 : 180.23 = 108.37 : x
  2. Step 2: Convert to fraction form
    130.52/180.23 = 108.37/x
  3. Step 3: Cross multiply
    130.52x = 180.23 × 108.37
  4. Step 4: Simplify right side
    130.52x = 19,531.53
  5. Step 5: Solve for x
    x = 19,531.53/130.52
  6. Step 6: Final answer
    x = 149.64

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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.