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Finding the Fourth Proportional to 703.69, 1,055.99 and 270.84

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Solution

The fourth proportional to 703.69, 1,055.99 and 270.84 is: 406.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.69 : 1,055.99 = 270.84 : x
  2. Step 2: Convert to fraction form
    703.69/1,055.99 = 270.84/x
  3. Step 3: Cross multiply
    703.69x = 1,055.99 × 270.84
  4. Step 4: Simplify right side
    703.69x = 286,007.45
  5. Step 5: Solve for x
    x = 286,007.45/703.69
  6. Step 6: Final answer
    x = 406.44

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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.