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Finding the Fourth Proportional to 358.76, 535.57 and 322.28

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Solution

The fourth proportional to 358.76, 535.57 and 322.28 is: 481.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.76 : 535.57 = 322.28 : x
  2. Step 2: Convert to fraction form
    358.76/535.57 = 322.28/x
  3. Step 3: Cross multiply
    358.76x = 535.57 × 322.28
  4. Step 4: Simplify right side
    358.76x = 172,603.50
  5. Step 5: Solve for x
    x = 172,603.50/358.76
  6. Step 6: Final answer
    x = 481.11

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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.