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Finding the Fourth Proportional to 509.05, 702.50 and 276.18

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Solution

The fourth proportional to 509.05, 702.50 and 276.18 is: 381.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.05 : 702.50 = 276.18 : x
  2. Step 2: Convert to fraction form
    509.05/702.50 = 276.18/x
  3. Step 3: Cross multiply
    509.05x = 702.50 × 276.18
  4. Step 4: Simplify right side
    509.05x = 194,012.43
  5. Step 5: Solve for x
    x = 194,012.43/509.05
  6. Step 6: Final answer
    x = 381.13

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