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Finding the Fourth Proportional to 283.11, 424.08 and 210.21

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Solution

The fourth proportional to 283.11, 424.08 and 210.21 is: 314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.11 : 424.08 = 210.21 : x
  2. Step 2: Convert to fraction form
    283.11/424.08 = 210.21/x
  3. Step 3: Cross multiply
    283.11x = 424.08 × 210.21
  4. Step 4: Simplify right side
    283.11x = 89,145.86
  5. Step 5: Solve for x
    x = 89,145.86/283.11
  6. Step 6: Final answer
    x = 314.88

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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.