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Finding the Fourth Proportional to 285.64, 428.73 and 183.22

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Solution

The fourth proportional to 285.64, 428.73 and 183.22 is: 275.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.64 : 428.73 = 183.22 : x
  2. Step 2: Convert to fraction form
    285.64/428.73 = 183.22/x
  3. Step 3: Cross multiply
    285.64x = 428.73 × 183.22
  4. Step 4: Simplify right side
    285.64x = 78,551.91
  5. Step 5: Solve for x
    x = 78,551.91/285.64
  6. Step 6: Final answer
    x = 275.00

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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.