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Finding the Fourth Proportional to 690, 952.68 and 483.28

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Solution

The fourth proportional to 690, 952.68 and 483.28 is: 667.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    690 : 952.68 = 483.28 : x
  2. Step 2: Convert to fraction form
    690/952.68 = 483.28/x
  3. Step 3: Cross multiply
    690x = 952.68 × 483.28
  4. Step 4: Simplify right side
    690x = 460,411.19
  5. Step 5: Solve for x
    x = 460,411.19/690
  6. Step 6: Final answer
    x = 667.26

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