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Finding the Fourth Proportional to 946.48, 1,419.73 and 361.75

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Solution

The fourth proportional to 946.48, 1,419.73 and 361.75 is: 542.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.48 : 1,419.73 = 361.75 : x
  2. Step 2: Convert to fraction form
    946.48/1,419.73 = 361.75/x
  3. Step 3: Cross multiply
    946.48x = 1,419.73 × 361.75
  4. Step 4: Simplify right side
    946.48x = 513,582.87
  5. Step 5: Solve for x
    x = 513,582.87/946.48
  6. Step 6: Final answer
    x = 542.63

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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.