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Finding the Fourth Proportional to 964.64, 1,446.78 and 348.32

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Solution

The fourth proportional to 964.64, 1,446.78 and 348.32 is: 522.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.64 : 1,446.78 = 348.32 : x
  2. Step 2: Convert to fraction form
    964.64/1,446.78 = 348.32/x
  3. Step 3: Cross multiply
    964.64x = 1,446.78 × 348.32
  4. Step 4: Simplify right side
    964.64x = 503,942.41
  5. Step 5: Solve for x
    x = 503,942.41/964.64
  6. Step 6: Final answer
    x = 522.42

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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.