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Finding the Fourth Proportional to 358.21, 536.71 and 276.81

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Solution

The fourth proportional to 358.21, 536.71 and 276.81 is: 414.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.21 : 536.71 = 276.81 : x
  2. Step 2: Convert to fraction form
    358.21/536.71 = 276.81/x
  3. Step 3: Cross multiply
    358.21x = 536.71 × 276.81
  4. Step 4: Simplify right side
    358.21x = 148,566.70
  5. Step 5: Solve for x
    x = 148,566.70/358.21
  6. Step 6: Final answer
    x = 414.75

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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.