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Finding the Fourth Proportional to 767.68, 1,150.98 and 334.60

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Solution

The fourth proportional to 767.68, 1,150.98 and 334.60 is: 501.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.68 : 1,150.98 = 334.60 : x
  2. Step 2: Convert to fraction form
    767.68/1,150.98 = 334.60/x
  3. Step 3: Cross multiply
    767.68x = 1,150.98 × 334.60
  4. Step 4: Simplify right side
    767.68x = 385,117.91
  5. Step 5: Solve for x
    x = 385,117.91/767.68
  6. Step 6: Final answer
    x = 501.66

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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.