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Finding the Fourth Proportional to 574.10, 792.27 and 312.13

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Solution

The fourth proportional to 574.10, 792.27 and 312.13 is: 430.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.10 : 792.27 = 312.13 : x
  2. Step 2: Convert to fraction form
    574.10/792.27 = 312.13/x
  3. Step 3: Cross multiply
    574.10x = 792.27 × 312.13
  4. Step 4: Simplify right side
    574.10x = 247,288.47
  5. Step 5: Solve for x
    x = 247,288.47/574.10
  6. Step 6: Final answer
    x = 430.74

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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.