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Finding the Fourth Proportional to 358.63, 536.90 and 272.32

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Solution

The fourth proportional to 358.63, 536.90 and 272.32 is: 407.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.63 : 536.90 = 272.32 : x
  2. Step 2: Convert to fraction form
    358.63/536.90 = 272.32/x
  3. Step 3: Cross multiply
    358.63x = 536.90 × 272.32
  4. Step 4: Simplify right side
    358.63x = 146,205.90
  5. Step 5: Solve for x
    x = 146,205.90/358.63
  6. Step 6: Final answer
    x = 407.68

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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.