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Finding the Fourth Proportional to 289.24, 433.38 and 175

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Solution

The fourth proportional to 289.24, 433.38 and 175 is: 262.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.24 : 433.38 = 175 : x
  2. Step 2: Convert to fraction form
    289.24/433.38 = 175/x
  3. Step 3: Cross multiply
    289.24x = 433.38 × 175
  4. Step 4: Simplify right side
    289.24x = 75,841.50
  5. Step 5: Solve for x
    x = 75,841.50/289.24
  6. Step 6: Final answer
    x = 262.21

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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.