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Finding the Fourth Proportional to 426.95, 589.04 and 279.67

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Solution

The fourth proportional to 426.95, 589.04 and 279.67 is: 385.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.95 : 589.04 = 279.67 : x
  2. Step 2: Convert to fraction form
    426.95/589.04 = 279.67/x
  3. Step 3: Cross multiply
    426.95x = 589.04 × 279.67
  4. Step 4: Simplify right side
    426.95x = 164,736.10
  5. Step 5: Solve for x
    x = 164,736.10/426.95
  6. Step 6: Final answer
    x = 385.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.