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Finding the Fourth Proportional to 298.83, 411.42 and 259.32

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Solution

The fourth proportional to 298.83, 411.42 and 259.32 is: 357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.83 : 411.42 = 259.32 : x
  2. Step 2: Convert to fraction form
    298.83/411.42 = 259.32/x
  3. Step 3: Cross multiply
    298.83x = 411.42 × 259.32
  4. Step 4: Simplify right side
    298.83x = 106,689.43
  5. Step 5: Solve for x
    x = 106,689.43/298.83
  6. Step 6: Final answer
    x = 357.02

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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.