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Finding the Fourth Proportional to 946.35, 1,419.15 and 361.16

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Solution

The fourth proportional to 946.35, 1,419.15 and 361.16 is: 541.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.35 : 1,419.15 = 361.16 : x
  2. Step 2: Convert to fraction form
    946.35/1,419.15 = 361.16/x
  3. Step 3: Cross multiply
    946.35x = 1,419.15 × 361.16
  4. Step 4: Simplify right side
    946.35x = 512,533.12
  5. Step 5: Solve for x
    x = 512,533.12/946.35
  6. Step 6: Final answer
    x = 541.59

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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.