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Finding the Fourth Proportional to 716.76, 990.96 and 551.52

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Solution

The fourth proportional to 716.76, 990.96 and 551.52 is: 762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.76 : 990.96 = 551.52 : x
  2. Step 2: Convert to fraction form
    716.76/990.96 = 551.52/x
  3. Step 3: Cross multiply
    716.76x = 990.96 × 551.52
  4. Step 4: Simplify right side
    716.76x = 546,534.26
  5. Step 5: Solve for x
    x = 546,534.26/716.76
  6. Step 6: Final answer
    x = 762.51

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