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Finding the Fourth Proportional to 298.53, 411.57 and 243.18

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Solution

The fourth proportional to 298.53, 411.57 and 243.18 is: 335.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.53 : 411.57 = 243.18 : x
  2. Step 2: Convert to fraction form
    298.53/411.57 = 243.18/x
  3. Step 3: Cross multiply
    298.53x = 411.57 × 243.18
  4. Step 4: Simplify right side
    298.53x = 100,085.59
  5. Step 5: Solve for x
    x = 100,085.59/298.53
  6. Step 6: Final answer
    x = 335.26

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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.