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Finding the Fourth Proportional to 598.64, 898.02 and 213.86

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Solution

The fourth proportional to 598.64, 898.02 and 213.86 is: 320.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    598.64 : 898.02 = 213.86 : x
  2. Step 2: Convert to fraction form
    598.64/898.02 = 213.86/x
  3. Step 3: Cross multiply
    598.64x = 898.02 × 213.86
  4. Step 4: Simplify right side
    598.64x = 192,050.56
  5. Step 5: Solve for x
    x = 192,050.56/598.64
  6. Step 6: Final answer
    x = 320.81

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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.