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Finding the Fourth Proportional to 351.13, 526.39 and 134.56

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Solution

The fourth proportional to 351.13, 526.39 and 134.56 is: 201.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.13 : 526.39 = 134.56 : x
  2. Step 2: Convert to fraction form
    351.13/526.39 = 134.56/x
  3. Step 3: Cross multiply
    351.13x = 526.39 × 134.56
  4. Step 4: Simplify right side
    351.13x = 70,831.04
  5. Step 5: Solve for x
    x = 70,831.04/351.13
  6. Step 6: Final answer
    x = 201.72

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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.