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Finding the Fourth Proportional to 134.04, 200.98 and 42.72

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Solution

The fourth proportional to 134.04, 200.98 and 42.72 is: 64.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.04 : 200.98 = 42.72 : x
  2. Step 2: Convert to fraction form
    134.04/200.98 = 42.72/x
  3. Step 3: Cross multiply
    134.04x = 200.98 × 42.72
  4. Step 4: Simplify right side
    134.04x = 8,585.87
  5. Step 5: Solve for x
    x = 8,585.87/134.04
  6. Step 6: Final answer
    x = 64.05

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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.