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Finding the Fourth Proportional to 555.08, 765.75 and 333.65

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Solution

The fourth proportional to 555.08, 765.75 and 333.65 is: 460.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.08 : 765.75 = 333.65 : x
  2. Step 2: Convert to fraction form
    555.08/765.75 = 333.65/x
  3. Step 3: Cross multiply
    555.08x = 765.75 × 333.65
  4. Step 4: Simplify right side
    555.08x = 255,492.49
  5. Step 5: Solve for x
    x = 255,492.49/555.08
  6. Step 6: Final answer
    x = 460.28

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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.