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Finding the Fourth Proportional to 467.78, 700.90 and 330.16

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Solution

The fourth proportional to 467.78, 700.90 and 330.16 is: 494.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.78 : 700.90 = 330.16 : x
  2. Step 2: Convert to fraction form
    467.78/700.90 = 330.16/x
  3. Step 3: Cross multiply
    467.78x = 700.90 × 330.16
  4. Step 4: Simplify right side
    467.78x = 231,409.14
  5. Step 5: Solve for x
    x = 231,409.14/467.78
  6. Step 6: Final answer
    x = 494.70

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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.