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Finding the Fourth Proportional to 638.14, 956.43 and 364.36

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Solution

The fourth proportional to 638.14, 956.43 and 364.36 is: 546.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.14 : 956.43 = 364.36 : x
  2. Step 2: Convert to fraction form
    638.14/956.43 = 364.36/x
  3. Step 3: Cross multiply
    638.14x = 956.43 × 364.36
  4. Step 4: Simplify right side
    638.14x = 348,484.83
  5. Step 5: Solve for x
    x = 348,484.83/638.14
  6. Step 6: Final answer
    x = 546.09

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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.