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Finding the Fourth Proportional to 280.93, 387.74 and 164.50

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Solution

The fourth proportional to 280.93, 387.74 and 164.50 is: 227.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.93 : 387.74 = 164.50 : x
  2. Step 2: Convert to fraction form
    280.93/387.74 = 164.50/x
  3. Step 3: Cross multiply
    280.93x = 387.74 × 164.50
  4. Step 4: Simplify right side
    280.93x = 63,783.23
  5. Step 5: Solve for x
    x = 63,783.23/280.93
  6. Step 6: Final answer
    x = 227.04

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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.