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Finding the Fourth Proportional to 325.08, 486.90 and 203.13

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Solution

The fourth proportional to 325.08, 486.90 and 203.13 is: 304.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.08 : 486.90 = 203.13 : x
  2. Step 2: Convert to fraction form
    325.08/486.90 = 203.13/x
  3. Step 3: Cross multiply
    325.08x = 486.90 × 203.13
  4. Step 4: Simplify right side
    325.08x = 98,904.00
  5. Step 5: Solve for x
    x = 98,904.00/325.08
  6. Step 6: Final answer
    x = 304.25

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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.