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Finding the Fourth Proportional to 330.07, 494.51 and 192.89

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Solution

The fourth proportional to 330.07, 494.51 and 192.89 is: 288.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.07 : 494.51 = 192.89 : x
  2. Step 2: Convert to fraction form
    330.07/494.51 = 192.89/x
  3. Step 3: Cross multiply
    330.07x = 494.51 × 192.89
  4. Step 4: Simplify right side
    330.07x = 95,386.03
  5. Step 5: Solve for x
    x = 95,386.03/330.07
  6. Step 6: Final answer
    x = 288.99

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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.