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Finding the Fourth Proportional to 703.34, 1,054.95 and 216.35

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Solution

The fourth proportional to 703.34, 1,054.95 and 216.35 is: 324.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.34 : 1,054.95 = 216.35 : x
  2. Step 2: Convert to fraction form
    703.34/1,054.95 = 216.35/x
  3. Step 3: Cross multiply
    703.34x = 1,054.95 × 216.35
  4. Step 4: Simplify right side
    703.34x = 228,238.43
  5. Step 5: Solve for x
    x = 228,238.43/703.34
  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.