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Finding the Fourth Proportional to 440, 607.20 and 265.36

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Solution

The fourth proportional to 440, 607.20 and 265.36 is: 366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440 : 607.20 = 265.36 : x
  2. Step 2: Convert to fraction form
    440/607.20 = 265.36/x
  3. Step 3: Cross multiply
    440x = 607.20 × 265.36
  4. Step 4: Simplify right side
    440x = 161,126.59
  5. Step 5: Solve for x
    x = 161,126.59/440
  6. Step 6: Final answer
    x = 366.20

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