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Finding the Fourth Proportional to 703.93, 1,055.91 and 217.03

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Solution

The fourth proportional to 703.93, 1,055.91 and 217.03 is: 325.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.93 : 1,055.91 = 217.03 : x
  2. Step 2: Convert to fraction form
    703.93/1,055.91 = 217.03/x
  3. Step 3: Cross multiply
    703.93x = 1,055.91 × 217.03
  4. Step 4: Simplify right side
    703.93x = 229,164.15
  5. Step 5: Solve for x
    x = 229,164.15/703.93
  6. Step 6: Final answer
    x = 325.55

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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.