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Finding the Fourth Proportional to 392.30, 585.86 and 341.10

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Solution

The fourth proportional to 392.30, 585.86 and 341.10 is: 509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.30 : 585.86 = 341.10 : x
  2. Step 2: Convert to fraction form
    392.30/585.86 = 341.10/x
  3. Step 3: Cross multiply
    392.30x = 585.86 × 341.10
  4. Step 4: Simplify right side
    392.30x = 199,836.85
  5. Step 5: Solve for x
    x = 199,836.85/392.30
  6. Step 6: Final answer
    x = 509.40

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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.