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Finding the Fourth Proportional to 328.88, 490.93 and 304.48

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Solution

The fourth proportional to 328.88, 490.93 and 304.48 is: 454.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.88 : 490.93 = 304.48 : x
  2. Step 2: Convert to fraction form
    328.88/490.93 = 304.48/x
  3. Step 3: Cross multiply
    328.88x = 490.93 × 304.48
  4. Step 4: Simplify right side
    328.88x = 149,478.37
  5. Step 5: Solve for x
    x = 149,478.37/328.88
  6. Step 6: Final answer
    x = 454.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.