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Finding the Fourth Proportional to 283.04, 424.84 and 213.39

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Solution

The fourth proportional to 283.04, 424.84 and 213.39 is: 320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.04 : 424.84 = 213.39 : x
  2. Step 2: Convert to fraction form
    283.04/424.84 = 213.39/x
  3. Step 3: Cross multiply
    283.04x = 424.84 × 213.39
  4. Step 4: Simplify right side
    283.04x = 90,656.61
  5. Step 5: Solve for x
    x = 90,656.61/283.04
  6. Step 6: Final answer
    x = 320.30

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