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Finding the Fourth Proportional to 559.66, 773.00 and 485.95

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Solution

The fourth proportional to 559.66, 773.00 and 485.95 is: 671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.66 : 773.00 = 485.95 : x
  2. Step 2: Convert to fraction form
    559.66/773.00 = 485.95/x
  3. Step 3: Cross multiply
    559.66x = 773.00 × 485.95
  4. Step 4: Simplify right side
    559.66x = 375,636.92
  5. Step 5: Solve for x
    x = 375,636.92/559.66
  6. Step 6: Final answer
    x = 671.19

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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.