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Finding the Fourth Proportional to 314.01, 433.53 and 281.21

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Solution

The fourth proportional to 314.01, 433.53 and 281.21 is: 388.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.01 : 433.53 = 281.21 : x
  2. Step 2: Convert to fraction form
    314.01/433.53 = 281.21/x
  3. Step 3: Cross multiply
    314.01x = 433.53 × 281.21
  4. Step 4: Simplify right side
    314.01x = 121,910.80
  5. Step 5: Solve for x
    x = 121,910.80/314.01
  6. Step 6: Final answer
    x = 388.24

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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.