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Finding the Fourth Proportional to 386.04, 578.86 and 202.98

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Solution

The fourth proportional to 386.04, 578.86 and 202.98 is: 304.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.04 : 578.86 = 202.98 : x
  2. Step 2: Convert to fraction form
    386.04/578.86 = 202.98/x
  3. Step 3: Cross multiply
    386.04x = 578.86 × 202.98
  4. Step 4: Simplify right side
    386.04x = 117,497.00
  5. Step 5: Solve for x
    x = 117,497.00/386.04
  6. Step 6: Final answer
    x = 304.36

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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.