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Finding the Fourth Proportional to 946.39, 1,419.59 and 330.10

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Solution

The fourth proportional to 946.39, 1,419.59 and 330.10 is: 495.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.39 : 1,419.59 = 330.10 : x
  2. Step 2: Convert to fraction form
    946.39/1,419.59 = 330.10/x
  3. Step 3: Cross multiply
    946.39x = 1,419.59 × 330.10
  4. Step 4: Simplify right side
    946.39x = 468,606.66
  5. Step 5: Solve for x
    x = 468,606.66/946.39
  6. Step 6: Final answer
    x = 495.15

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Double scale
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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.