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Finding the Fourth Proportional to 467, 644.46 and 260

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Solution

The fourth proportional to 467, 644.46 and 260 is: 358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    467 : 644.46 = 260 : x
  2. Step 2: Convert to fraction form
    467/644.46 = 260/x
  3. Step 3: Cross multiply
    467x = 644.46 × 260
  4. Step 4: Simplify right side
    467x = 167,559.60
  5. Step 5: Solve for x
    x = 167,559.60/467
  6. Step 6: Final answer
    x = 358.80

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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.