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Finding the Fourth Proportional to 379.07, 521.78 and 334.65

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Solution

The fourth proportional to 379.07, 521.78 and 334.65 is: 460.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.07 : 521.78 = 334.65 : x
  2. Step 2: Convert to fraction form
    379.07/521.78 = 334.65/x
  3. Step 3: Cross multiply
    379.07x = 521.78 × 334.65
  4. Step 4: Simplify right side
    379.07x = 174,612.00
  5. Step 5: Solve for x
    x = 174,612.00/379.07
  6. Step 6: Final answer
    x = 460.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.