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Finding the Fourth Proportional to 555.12, 765.75 and 333.94

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Solution

The fourth proportional to 555.12, 765.75 and 333.94 is: 460.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.12 : 765.75 = 333.94 : x
  2. Step 2: Convert to fraction form
    555.12/765.75 = 333.94/x
  3. Step 3: Cross multiply
    555.12x = 765.75 × 333.94
  4. Step 4: Simplify right side
    555.12x = 255,714.56
  5. Step 5: Solve for x
    x = 255,714.56/555.12
  6. Step 6: Final answer
    x = 460.65

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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.