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Finding the Fourth Proportional to 520, 780.16 and 246.08

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Solution

The fourth proportional to 520, 780.16 and 246.08 is: 369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520 : 780.16 = 246.08 : x
  2. Step 2: Convert to fraction form
    520/780.16 = 246.08/x
  3. Step 3: Cross multiply
    520x = 780.16 × 246.08
  4. Step 4: Simplify right side
    520x = 191,981.77
  5. Step 5: Solve for x
    x = 191,981.77/520
  6. Step 6: Final answer
    x = 369.20

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