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Finding the Fourth Proportional to 420.04, 579.28 and 341.34

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Solution

The fourth proportional to 420.04, 579.28 and 341.34 is: 470.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420.04 : 579.28 = 341.34 : x
  2. Step 2: Convert to fraction form
    420.04/579.28 = 341.34/x
  3. Step 3: Cross multiply
    420.04x = 579.28 × 341.34
  4. Step 4: Simplify right side
    420.04x = 197,731.44
  5. Step 5: Solve for x
    x = 197,731.44/420.04
  6. Step 6: Final answer
    x = 470.74

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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.