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Finding the Fourth Proportional to 285.64, 428.08 and 175.99

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Solution

The fourth proportional to 285.64, 428.08 and 175.99 is: 263.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.64 : 428.08 = 175.99 : x
  2. Step 2: Convert to fraction form
    285.64/428.08 = 175.99/x
  3. Step 3: Cross multiply
    285.64x = 428.08 × 175.99
  4. Step 4: Simplify right side
    285.64x = 75,337.80
  5. Step 5: Solve for x
    x = 75,337.80/285.64
  6. Step 6: Final answer
    x = 263.75

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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.