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Finding the Fourth Proportional to 946.59, 1,420.20 and 330.27

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Solution

The fourth proportional to 946.59, 1,420.20 and 330.27 is: 495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.59 : 1,420.20 = 330.27 : x
  2. Step 2: Convert to fraction form
    946.59/1,420.20 = 330.27/x
  3. Step 3: Cross multiply
    946.59x = 1,420.20 × 330.27
  4. Step 4: Simplify right side
    946.59x = 469,049.45
  5. Step 5: Solve for x
    x = 469,049.45/946.59
  6. Step 6: Final answer
    x = 495.51

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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.