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Finding the Fourth Proportional to 371.64, 516.09 and 368.04

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Solution

The fourth proportional to 371.64, 516.09 and 368.04 is: 511.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.64 : 516.09 = 368.04 : x
  2. Step 2: Convert to fraction form
    371.64/516.09 = 368.04/x
  3. Step 3: Cross multiply
    371.64x = 516.09 × 368.04
  4. Step 4: Simplify right side
    371.64x = 189,941.76
  5. Step 5: Solve for x
    x = 189,941.76/371.64
  6. Step 6: Final answer
    x = 511.09

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.