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Finding the Fourth Proportional to 264.20, 364.59 and 153.68

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Solution

The fourth proportional to 264.20, 364.59 and 153.68 is: 212.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.20 : 364.59 = 153.68 : x
  2. Step 2: Convert to fraction form
    264.20/364.59 = 153.68/x
  3. Step 3: Cross multiply
    264.20x = 364.59 × 153.68
  4. Step 4: Simplify right side
    264.20x = 56,028.37
  5. Step 5: Solve for x
    x = 56,028.37/264.20
  6. Step 6: Final answer
    x = 212.07

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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.