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Finding the Fourth Proportional to 358.65, 536.57 and 272.24

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Solution

The fourth proportional to 358.65, 536.57 and 272.24 is: 407.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.65 : 536.57 = 272.24 : x
  2. Step 2: Convert to fraction form
    358.65/536.57 = 272.24/x
  3. Step 3: Cross multiply
    358.65x = 536.57 × 272.24
  4. Step 4: Simplify right side
    358.65x = 146,071.77
  5. Step 5: Solve for x
    x = 146,071.77/358.65
  6. Step 6: Final answer
    x = 407.28

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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.