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Finding the Fourth Proportional to 521.10, 719.37 and 346.95

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Solution

The fourth proportional to 521.10, 719.37 and 346.95 is: 478.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.10 : 719.37 = 346.95 : x
  2. Step 2: Convert to fraction form
    521.10/719.37 = 346.95/x
  3. Step 3: Cross multiply
    521.10x = 719.37 × 346.95
  4. Step 4: Simplify right side
    521.10x = 249,585.42
  5. Step 5: Solve for x
    x = 249,585.42/521.10
  6. Step 6: Final answer
    x = 478.96

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