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Finding the Fourth Proportional to 379.04, 521.24 and 303.40

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Solution

The fourth proportional to 379.04, 521.24 and 303.40 is: 417.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.04 : 521.24 = 303.40 : x
  2. Step 2: Convert to fraction form
    379.04/521.24 = 303.40/x
  3. Step 3: Cross multiply
    379.04x = 521.24 × 303.40
  4. Step 4: Simplify right side
    379.04x = 158,144.54
  5. Step 5: Solve for x
    x = 158,144.54/379.04
  6. Step 6: Final answer
    x = 417.23

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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.