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Finding the Fourth Proportional to 486.02, 730.04 and 393.58

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Solution

The fourth proportional to 486.02, 730.04 and 393.58 is: 591.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.02 : 730.04 = 393.58 : x
  2. Step 2: Convert to fraction form
    486.02/730.04 = 393.58/x
  3. Step 3: Cross multiply
    486.02x = 730.04 × 393.58
  4. Step 4: Simplify right side
    486.02x = 287,329.14
  5. Step 5: Solve for x
    x = 287,329.14/486.02
  6. Step 6: Final answer
    x = 591.19

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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.