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Finding the Fourth Proportional to 510.88, 765.08 and 290.84

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Solution

The fourth proportional to 510.88, 765.08 and 290.84 is: 435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.88 : 765.08 = 290.84 : x
  2. Step 2: Convert to fraction form
    510.88/765.08 = 290.84/x
  3. Step 3: Cross multiply
    510.88x = 765.08 × 290.84
  4. Step 4: Simplify right side
    510.88x = 222,514.68
  5. Step 5: Solve for x
    x = 222,514.68/510.88
  6. Step 6: Final answer
    x = 435.55

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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.