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Finding the Fourth Proportional to 559.02, 771.80 and 349.28

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Solution

The fourth proportional to 559.02, 771.80 and 349.28 is: 482.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.02 : 771.80 = 349.28 : x
  2. Step 2: Convert to fraction form
    559.02/771.80 = 349.28/x
  3. Step 3: Cross multiply
    559.02x = 771.80 × 349.28
  4. Step 4: Simplify right side
    559.02x = 269,574.30
  5. Step 5: Solve for x
    x = 269,574.30/559.02
  6. Step 6: Final answer
    x = 482.23

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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.