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Finding the Fourth Proportional to 703.52, 1,055.46 and 216.57

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Solution

The fourth proportional to 703.52, 1,055.46 and 216.57 is: 324.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.52 : 1,055.46 = 216.57 : x
  2. Step 2: Convert to fraction form
    703.52/1,055.46 = 216.57/x
  3. Step 3: Cross multiply
    703.52x = 1,055.46 × 216.57
  4. Step 4: Simplify right side
    703.52x = 228,580.97
  5. Step 5: Solve for x
    x = 228,580.97/703.52
  6. Step 6: Final answer
    x = 324.91

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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.