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Finding the Fourth Proportional to 510.96, 767.88 and 254.64

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Solution

The fourth proportional to 510.96, 767.88 and 254.64 is: 382.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.96 : 767.88 = 254.64 : x
  2. Step 2: Convert to fraction form
    510.96/767.88 = 254.64/x
  3. Step 3: Cross multiply
    510.96x = 767.88 × 254.64
  4. Step 4: Simplify right side
    510.96x = 195,532.96
  5. Step 5: Solve for x
    x = 195,532.96/510.96
  6. Step 6: Final answer
    x = 382.68

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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.