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Finding the Fourth Proportional to 656.01, 983.79 and 326.95

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Solution

The fourth proportional to 656.01, 983.79 and 326.95 is: 490.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.01 : 983.79 = 326.95 : x
  2. Step 2: Convert to fraction form
    656.01/983.79 = 326.95/x
  3. Step 3: Cross multiply
    656.01x = 983.79 × 326.95
  4. Step 4: Simplify right side
    656.01x = 321,647.68
  5. Step 5: Solve for x
    x = 321,647.68/656.01
  6. Step 6: Final answer
    x = 490.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.