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Finding the Fourth Proportional to 395.80, 547.06 and 348.76

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Solution

The fourth proportional to 395.80, 547.06 and 348.76 is: 482.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.80 : 547.06 = 348.76 : x
  2. Step 2: Convert to fraction form
    395.80/547.06 = 348.76/x
  3. Step 3: Cross multiply
    395.80x = 547.06 × 348.76
  4. Step 4: Simplify right side
    395.80x = 190,792.65
  5. Step 5: Solve for x
    x = 190,792.65/395.80
  6. Step 6: Final answer
    x = 482.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.