Home / 134.24-201.28-42.90

Finding the Fourth Proportional to 134.24, 201.28 and 42.90

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Solution

The fourth proportional to 134.24, 201.28 and 42.90 is: 64.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.24 : 201.28 = 42.90 : x
  2. Step 2: Convert to fraction form
    134.24/201.28 = 42.90/x
  3. Step 3: Cross multiply
    134.24x = 201.28 × 42.90
  4. Step 4: Simplify right side
    134.24x = 8,634.91
  5. Step 5: Solve for x
    x = 8,634.91/134.24
  6. Step 6: Final answer
    x = 64.32

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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.