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Finding the Fourth Proportional to 946.47, 1,419.84 and 483.99

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Solution

The fourth proportional to 946.47, 1,419.84 and 483.99 is: 726.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.47 : 1,419.84 = 483.99 : x
  2. Step 2: Convert to fraction form
    946.47/1,419.84 = 483.99/x
  3. Step 3: Cross multiply
    946.47x = 1,419.84 × 483.99
  4. Step 4: Simplify right side
    946.47x = 687,188.36
  5. Step 5: Solve for x
    x = 687,188.36/946.47
  6. Step 6: Final answer
    x = 726.05

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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.