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Finding the Fourth Proportional to 946.08, 1,419.12 and 637.92

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Solution

The fourth proportional to 946.08, 1,419.12 and 637.92 is: 956.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.08 : 1,419.12 = 637.92 : x
  2. Step 2: Convert to fraction form
    946.08/1,419.12 = 637.92/x
  3. Step 3: Cross multiply
    946.08x = 1,419.12 × 637.92
  4. Step 4: Simplify right side
    946.08x = 905,285.03
  5. Step 5: Solve for x
    x = 905,285.03/946.08
  6. Step 6: Final answer
    x = 956.88

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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.