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Finding the Fourth Proportional to 336.78, 467.19 and 312.48

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Solution

The fourth proportional to 336.78, 467.19 and 312.48 is: 433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.78 : 467.19 = 312.48 : x
  2. Step 2: Convert to fraction form
    336.78/467.19 = 312.48/x
  3. Step 3: Cross multiply
    336.78x = 467.19 × 312.48
  4. Step 4: Simplify right side
    336.78x = 145,987.53
  5. Step 5: Solve for x
    x = 145,987.53/336.78
  6. Step 6: Final answer
    x = 433.48

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Find fourth proportional to 168.39, 233.60 and 156.24
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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.