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Finding the Fourth Proportional to 583.73, 805.55 and 321.75

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Solution

The fourth proportional to 583.73, 805.55 and 321.75 is: 444.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.73 : 805.55 = 321.75 : x
  2. Step 2: Convert to fraction form
    583.73/805.55 = 321.75/x
  3. Step 3: Cross multiply
    583.73x = 805.55 × 321.75
  4. Step 4: Simplify right side
    583.73x = 259,185.71
  5. Step 5: Solve for x
    x = 259,185.71/583.73
  6. Step 6: Final answer
    x = 444.01

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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.