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Finding the Fourth Proportional to 390.83, 586.17 and 237.74

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Solution

The fourth proportional to 390.83, 586.17 and 237.74 is: 356.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    390.83 : 586.17 = 237.74 : x
  2. Step 2: Convert to fraction form
    390.83/586.17 = 237.74/x
  3. Step 3: Cross multiply
    390.83x = 586.17 × 237.74
  4. Step 4: Simplify right side
    390.83x = 139,353.12
  5. Step 5: Solve for x
    x = 139,353.12/390.83
  6. Step 6: Final answer
    x = 356.56

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