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Finding the Fourth Proportional to 964.81, 1,447.46 and 444.38

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Solution

The fourth proportional to 964.81, 1,447.46 and 444.38 is: 666.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.81 : 1,447.46 = 444.38 : x
  2. Step 2: Convert to fraction form
    964.81/1,447.46 = 444.38/x
  3. Step 3: Cross multiply
    964.81x = 1,447.46 × 444.38
  4. Step 4: Simplify right side
    964.81x = 643,222.27
  5. Step 5: Solve for x
    x = 643,222.27/964.81
  6. Step 6: Final answer
    x = 666.69

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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.