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Finding the Fourth Proportional to 398.92, 598.08 and 358.22

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Solution

The fourth proportional to 398.92, 598.08 and 358.22 is: 537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.92 : 598.08 = 358.22 : x
  2. Step 2: Convert to fraction form
    398.92/598.08 = 358.22/x
  3. Step 3: Cross multiply
    398.92x = 598.08 × 358.22
  4. Step 4: Simplify right side
    398.92x = 214,240.93
  5. Step 5: Solve for x
    x = 214,240.93/398.92
  6. Step 6: Final answer
    x = 537.05

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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.