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Finding the Fourth Proportional to 195.51, 292.86 and 130.31

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Solution

The fourth proportional to 195.51, 292.86 and 130.31 is: 195.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.51 : 292.86 = 130.31 : x
  2. Step 2: Convert to fraction form
    195.51/292.86 = 130.31/x
  3. Step 3: Cross multiply
    195.51x = 292.86 × 130.31
  4. Step 4: Simplify right side
    195.51x = 38,161.12
  5. Step 5: Solve for x
    x = 38,161.12/195.51
  6. Step 6: Final answer
    x = 195.19

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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.