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Finding the Fourth Proportional to 134.32, 201.40 and 65.80

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Solution

The fourth proportional to 134.32, 201.40 and 65.80 is: 98.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.32 : 201.40 = 65.80 : x
  2. Step 2: Convert to fraction form
    134.32/201.40 = 65.80/x
  3. Step 3: Cross multiply
    134.32x = 201.40 × 65.80
  4. Step 4: Simplify right side
    134.32x = 13,252.12
  5. Step 5: Solve for x
    x = 13,252.12/134.32
  6. Step 6: Final answer
    x = 98.66

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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.