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Finding the Fourth Proportional to 510.17, 765.31 and 185.57

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Solution

The fourth proportional to 510.17, 765.31 and 185.57 is: 278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.17 : 765.31 = 185.57 : x
  2. Step 2: Convert to fraction form
    510.17/765.31 = 185.57/x
  3. Step 3: Cross multiply
    510.17x = 765.31 × 185.57
  4. Step 4: Simplify right side
    510.17x = 142,018.58
  5. Step 5: Solve for x
    x = 142,018.58/510.17
  6. Step 6: Final answer
    x = 278.38

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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.