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Finding the Fourth Proportional to 585.11, 807.40 and 323.11

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Solution

The fourth proportional to 585.11, 807.40 and 323.11 is: 445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.11 : 807.40 = 323.11 : x
  2. Step 2: Convert to fraction form
    585.11/807.40 = 323.11/x
  3. Step 3: Cross multiply
    585.11x = 807.40 × 323.11
  4. Step 4: Simplify right side
    585.11x = 260,879.01
  5. Step 5: Solve for x
    x = 260,879.01/585.11
  6. Step 6: Final answer
    x = 445.86

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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.