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Finding the Fourth Proportional to 465.78, 699.24 and 283.26

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Solution

The fourth proportional to 465.78, 699.24 and 283.26 is: 425.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.78 : 699.24 = 283.26 : x
  2. Step 2: Convert to fraction form
    465.78/699.24 = 283.26/x
  3. Step 3: Cross multiply
    465.78x = 699.24 × 283.26
  4. Step 4: Simplify right side
    465.78x = 198,066.72
  5. Step 5: Solve for x
    x = 198,066.72/465.78
  6. Step 6: Final answer
    x = 425.24

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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.