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Finding the Fourth Proportional to 716.37, 1,072.56 and 368.96

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Solution

The fourth proportional to 716.37, 1,072.56 and 368.96 is: 552.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.37 : 1,072.56 = 368.96 : x
  2. Step 2: Convert to fraction form
    716.37/1,072.56 = 368.96/x
  3. Step 3: Cross multiply
    716.37x = 1,072.56 × 368.96
  4. Step 4: Simplify right side
    716.37x = 395,726.37
  5. Step 5: Solve for x
    x = 395,726.37/716.37
  6. Step 6: Final answer
    x = 552.41

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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.