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Finding the Fourth Proportional to 510.03, 765.18 and 315.18

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Solution

The fourth proportional to 510.03, 765.18 and 315.18 is: 472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.03 : 765.18 = 315.18 : x
  2. Step 2: Convert to fraction form
    510.03/765.18 = 315.18/x
  3. Step 3: Cross multiply
    510.03x = 765.18 × 315.18
  4. Step 4: Simplify right side
    510.03x = 241,169.43
  5. Step 5: Solve for x
    x = 241,169.43/510.03
  6. Step 6: Final answer
    x = 472.85

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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.