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Finding the Fourth Proportional to 195.02, 291.93 and 126.40

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Solution

The fourth proportional to 195.02, 291.93 and 126.40 is: 189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.02 : 291.93 = 126.40 : x
  2. Step 2: Convert to fraction form
    195.02/291.93 = 126.40/x
  3. Step 3: Cross multiply
    195.02x = 291.93 × 126.40
  4. Step 4: Simplify right side
    195.02x = 36,899.32
  5. Step 5: Solve for x
    x = 36,899.32/195.02
  6. Step 6: Final answer
    x = 189.21

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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.