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Finding the Fourth Proportional to 314.21, 433.53 and 181.40

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Solution

The fourth proportional to 314.21, 433.53 and 181.40 is: 250.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.21 : 433.53 = 181.40 : x
  2. Step 2: Convert to fraction form
    314.21/433.53 = 181.40/x
  3. Step 3: Cross multiply
    314.21x = 433.53 × 181.40
  4. Step 4: Simplify right side
    314.21x = 78,639.97
  5. Step 5: Solve for x
    x = 78,639.97/314.21
  6. Step 6: Final answer
    x = 250.28

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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.