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Finding the Fourth Proportional to 358.11, 534.98 and 254.59

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Solution

The fourth proportional to 358.11, 534.98 and 254.59 is: 380.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.11 : 534.98 = 254.59 : x
  2. Step 2: Convert to fraction form
    358.11/534.98 = 254.59/x
  3. Step 3: Cross multiply
    358.11x = 534.98 × 254.59
  4. Step 4: Simplify right side
    358.11x = 136,199.86
  5. Step 5: Solve for x
    x = 136,199.86/358.11
  6. Step 6: Final answer
    x = 380.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.