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Finding the Fourth Proportional to 285.84, 428.76 and 182.82

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Solution

The fourth proportional to 285.84, 428.76 and 182.82 is: 274.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.84 : 428.76 = 182.82 : x
  2. Step 2: Convert to fraction form
    285.84/428.76 = 182.82/x
  3. Step 3: Cross multiply
    285.84x = 428.76 × 182.82
  4. Step 4: Simplify right side
    285.84x = 78,385.90
  5. Step 5: Solve for x
    x = 78,385.90/285.84
  6. Step 6: Final answer
    x = 274.23

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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.