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Finding the Fourth Proportional to 494.66, 682.61 and 320.00

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Solution

The fourth proportional to 494.66, 682.61 and 320.00 is: 441.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.66 : 682.61 = 320.00 : x
  2. Step 2: Convert to fraction form
    494.66/682.61 = 320.00/x
  3. Step 3: Cross multiply
    494.66x = 682.61 × 320.00
  4. Step 4: Simplify right side
    494.66x = 218,430.19
  5. Step 5: Solve for x
    x = 218,430.19/494.66
  6. Step 6: Final answer
    x = 441.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.