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Finding the Fourth Proportional to 953.25, 1,315.46 and 533.64

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Solution

The fourth proportional to 953.25, 1,315.46 and 533.64 is: 736.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.25 : 1,315.46 = 533.64 : x
  2. Step 2: Convert to fraction form
    953.25/1,315.46 = 533.64/x
  3. Step 3: Cross multiply
    953.25x = 1,315.46 × 533.64
  4. Step 4: Simplify right side
    953.25x = 701,979.41
  5. Step 5: Solve for x
    x = 701,979.41/953.25
  6. Step 6: Final answer
    x = 736.41

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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.