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Finding the Fourth Proportional to 467.68, 700.40 and 398.80

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Solution

The fourth proportional to 467.68, 700.40 and 398.80 is: 597.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.68 : 700.40 = 398.80 : x
  2. Step 2: Convert to fraction form
    467.68/700.40 = 398.80/x
  3. Step 3: Cross multiply
    467.68x = 700.40 × 398.80
  4. Step 4: Simplify right side
    467.68x = 279,319.52
  5. Step 5: Solve for x
    x = 279,319.52/467.68
  6. Step 6: Final answer
    x = 597.24

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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.