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Finding the Fourth Proportional to 946.30, 1,419.04 and 296.90

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Solution

The fourth proportional to 946.30, 1,419.04 and 296.90 is: 445.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.30 : 1,419.04 = 296.90 : x
  2. Step 2: Convert to fraction form
    946.30/1,419.04 = 296.90/x
  3. Step 3: Cross multiply
    946.30x = 1,419.04 × 296.90
  4. Step 4: Simplify right side
    946.30x = 421,312.98
  5. Step 5: Solve for x
    x = 421,312.98/946.30
  6. Step 6: Final answer
    x = 445.22

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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.