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Finding the Fourth Proportional to 462.27, 693.81 and 390.18

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Solution

The fourth proportional to 462.27, 693.81 and 390.18 is: 585.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.27 : 693.81 = 390.18 : x
  2. Step 2: Convert to fraction form
    462.27/693.81 = 390.18/x
  3. Step 3: Cross multiply
    462.27x = 693.81 × 390.18
  4. Step 4: Simplify right side
    462.27x = 270,710.79
  5. Step 5: Solve for x
    x = 270,710.79/462.27
  6. Step 6: Final answer
    x = 585.61

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