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Finding the Fourth Proportional to 716.73, 988.86 and 468.39

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Solution

The fourth proportional to 716.73, 988.86 and 468.39 is: 646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.73 : 988.86 = 468.39 : x
  2. Step 2: Convert to fraction form
    716.73/988.86 = 468.39/x
  3. Step 3: Cross multiply
    716.73x = 988.86 × 468.39
  4. Step 4: Simplify right side
    716.73x = 463,172.14
  5. Step 5: Solve for x
    x = 463,172.14/716.73
  6. Step 6: Final answer
    x = 646.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.