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Finding the Fourth Proportional to 946.44, 1,419.86 and 330.18

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Solution

The fourth proportional to 946.44, 1,419.86 and 330.18 is: 495.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.44 : 1,419.86 = 330.18 : x
  2. Step 2: Convert to fraction form
    946.44/1,419.86 = 330.18/x
  3. Step 3: Cross multiply
    946.44x = 1,419.86 × 330.18
  4. Step 4: Simplify right side
    946.44x = 468,809.37
  5. Step 5: Solve for x
    x = 468,809.37/946.44
  6. Step 6: Final answer
    x = 495.34

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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.