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Finding the Fourth Proportional to 146.51, 219.12 and 130.38

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Solution

The fourth proportional to 146.51, 219.12 and 130.38 is: 194.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.51 : 219.12 = 130.38 : x
  2. Step 2: Convert to fraction form
    146.51/219.12 = 130.38/x
  3. Step 3: Cross multiply
    146.51x = 219.12 × 130.38
  4. Step 4: Simplify right side
    146.51x = 28,568.67
  5. Step 5: Solve for x
    x = 28,568.67/146.51
  6. Step 6: Final answer
    x = 194.99

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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.