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Finding the Fourth Proportional to 358.46, 538.50 and 290.42

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Solution

The fourth proportional to 358.46, 538.50 and 290.42 is: 436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.46 : 538.50 = 290.42 : x
  2. Step 2: Convert to fraction form
    358.46/538.50 = 290.42/x
  3. Step 3: Cross multiply
    358.46x = 538.50 × 290.42
  4. Step 4: Simplify right side
    358.46x = 156,391.17
  5. Step 5: Solve for x
    x = 156,391.17/358.46
  6. Step 6: Final answer
    x = 436.29

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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.