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Finding the Fourth Proportional to 460.44, 634.94 and 285.72

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Solution

The fourth proportional to 460.44, 634.94 and 285.72 is: 394.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.44 : 634.94 = 285.72 : x
  2. Step 2: Convert to fraction form
    460.44/634.94 = 285.72/x
  3. Step 3: Cross multiply
    460.44x = 634.94 × 285.72
  4. Step 4: Simplify right side
    460.44x = 181,415.06
  5. Step 5: Solve for x
    x = 181,415.06/460.44
  6. Step 6: Final answer
    x = 394.00

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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.