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Finding the Fourth Proportional to 559.88, 774.36 and 443.00

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Solution

The fourth proportional to 559.88, 774.36 and 443.00 is: 612.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.88 : 774.36 = 443.00 : x
  2. Step 2: Convert to fraction form
    559.88/774.36 = 443.00/x
  3. Step 3: Cross multiply
    559.88x = 774.36 × 443.00
  4. Step 4: Simplify right side
    559.88x = 343,037.61
  5. Step 5: Solve for x
    x = 343,037.61/559.88
  6. Step 6: Final answer
    x = 612.70

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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.