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Finding the Fourth Proportional to 554.97, 830.63 and 494.22

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Solution

The fourth proportional to 554.97, 830.63 and 494.22 is: 739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.97 : 830.63 = 494.22 : x
  2. Step 2: Convert to fraction form
    554.97/830.63 = 494.22/x
  3. Step 3: Cross multiply
    554.97x = 830.63 × 494.22
  4. Step 4: Simplify right side
    554.97x = 410,511.49
  5. Step 5: Solve for x
    x = 410,511.49/554.97
  6. Step 6: Final answer
    x = 739.70

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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.