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Finding the Fourth Proportional to 880.08, 1,208.07 and 779.64

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Solution

The fourth proportional to 880.08, 1,208.07 and 779.64 is: 1,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.08 : 1,208.07 = 779.64 : x
  2. Step 2: Convert to fraction form
    880.08/1,208.07 = 779.64/x
  3. Step 3: Cross multiply
    880.08x = 1,208.07 × 779.64
  4. Step 4: Simplify right side
    880.08x = 941,859.69
  5. Step 5: Solve for x
    x = 941,859.69/880.08
  6. Step 6: Final answer
    x = 1,070.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.