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Finding the Fourth Proportional to 284.74, 427.08 and 79.33

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Solution

The fourth proportional to 284.74, 427.08 and 79.33 is: 118.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.74 : 427.08 = 79.33 : x
  2. Step 2: Convert to fraction form
    284.74/427.08 = 79.33/x
  3. Step 3: Cross multiply
    284.74x = 427.08 × 79.33
  4. Step 4: Simplify right side
    284.74x = 33,880.26
  5. Step 5: Solve for x
    x = 33,880.26/284.74
  6. Step 6: Final answer
    x = 118.99

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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.