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Finding the Fourth Proportional to 703.51, 1,055.01 and 216.39

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Solution

The fourth proportional to 703.51, 1,055.01 and 216.39 is: 324.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.51 : 1,055.01 = 216.39 : x
  2. Step 2: Convert to fraction form
    703.51/1,055.01 = 216.39/x
  3. Step 3: Cross multiply
    703.51x = 1,055.01 × 216.39
  4. Step 4: Simplify right side
    703.51x = 228,293.61
  5. Step 5: Solve for x
    x = 228,293.61/703.51
  6. Step 6: Final answer
    x = 324.51

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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.