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Finding the Fourth Proportional to 470.84, 705.93 and 393.68

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Solution

The fourth proportional to 470.84, 705.93 and 393.68 is: 590.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.84 : 705.93 = 393.68 : x
  2. Step 2: Convert to fraction form
    470.84/705.93 = 393.68/x
  3. Step 3: Cross multiply
    470.84x = 705.93 × 393.68
  4. Step 4: Simplify right side
    470.84x = 277,906.99
  5. Step 5: Solve for x
    x = 277,906.99/470.84
  6. Step 6: Final answer
    x = 590.24

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