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Finding the Fourth Proportional to 964.71, 1,447.67 and 554.14

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Solution

The fourth proportional to 964.71, 1,447.67 and 554.14 is: 831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.71 : 1,447.67 = 554.14 : x
  2. Step 2: Convert to fraction form
    964.71/1,447.67 = 554.14/x
  3. Step 3: Cross multiply
    964.71x = 1,447.67 × 554.14
  4. Step 4: Simplify right side
    964.71x = 802,215.05
  5. Step 5: Solve for x
    x = 802,215.05/964.71
  6. Step 6: Final answer
    x = 831.56

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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.