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Finding the Fourth Proportional to 389.08, 536.46 and 333.88

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Solution

The fourth proportional to 389.08, 536.46 and 333.88 is: 460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.08 : 536.46 = 333.88 : x
  2. Step 2: Convert to fraction form
    389.08/536.46 = 333.88/x
  3. Step 3: Cross multiply
    389.08x = 536.46 × 333.88
  4. Step 4: Simplify right side
    389.08x = 179,113.26
  5. Step 5: Solve for x
    x = 179,113.26/389.08
  6. Step 6: Final answer
    x = 460.35

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Why These Related Problems?

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