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Finding the Fourth Proportional to 364.71, 546.15 and 255.97

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Solution

The fourth proportional to 364.71, 546.15 and 255.97 is: 383.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.71 : 546.15 = 255.97 : x
  2. Step 2: Convert to fraction form
    364.71/546.15 = 255.97/x
  3. Step 3: Cross multiply
    364.71x = 546.15 × 255.97
  4. Step 4: Simplify right side
    364.71x = 139,798.02
  5. Step 5: Solve for x
    x = 139,798.02/364.71
  6. Step 6: Final answer
    x = 383.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.