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Finding the Fourth Proportional to 358.83, 494.51 and 299.70

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Solution

The fourth proportional to 358.83, 494.51 and 299.70 is: 413.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.83 : 494.51 = 299.70 : x
  2. Step 2: Convert to fraction form
    358.83/494.51 = 299.70/x
  3. Step 3: Cross multiply
    358.83x = 494.51 × 299.70
  4. Step 4: Simplify right side
    358.83x = 148,203.15
  5. Step 5: Solve for x
    x = 148,203.15/358.83
  6. Step 6: Final answer
    x = 413.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.