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Finding the Fourth Proportional to 368.16, 549.15 and 338.31

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Solution

The fourth proportional to 368.16, 549.15 and 338.31 is: 504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.16 : 549.15 = 338.31 : x
  2. Step 2: Convert to fraction form
    368.16/549.15 = 338.31/x
  3. Step 3: Cross multiply
    368.16x = 549.15 × 338.31
  4. Step 4: Simplify right side
    368.16x = 185,782.94
  5. Step 5: Solve for x
    x = 185,782.94/368.16
  6. Step 6: Final answer
    x = 504.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.