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Finding the Fourth Proportional to 395.20, 544.70 and 270.64

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Solution

The fourth proportional to 395.20, 544.70 and 270.64 is: 373.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.20 : 544.70 = 270.64 : x
  2. Step 2: Convert to fraction form
    395.20/544.70 = 270.64/x
  3. Step 3: Cross multiply
    395.20x = 544.70 × 270.64
  4. Step 4: Simplify right side
    395.20x = 147,417.61
  5. Step 5: Solve for x
    x = 147,417.61/395.20
  6. Step 6: Final answer
    x = 373.02

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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.