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Finding the Fourth Proportional to 340.00, 509.74 and 108.76

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Solution

The fourth proportional to 340.00, 509.74 and 108.76 is: 163.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.00 : 509.74 = 108.76 : x
  2. Step 2: Convert to fraction form
    340.00/509.74 = 108.76/x
  3. Step 3: Cross multiply
    340.00x = 509.74 × 108.76
  4. Step 4: Simplify right side
    340.00x = 55,439.34
  5. Step 5: Solve for x
    x = 55,439.34/340.00
  6. Step 6: Final answer
    x = 163.06

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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.