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Finding the Fourth Proportional to 275.94, 380.73 and 159.51

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Solution

The fourth proportional to 275.94, 380.73 and 159.51 is: 220.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.94 : 380.73 = 159.51 : x
  2. Step 2: Convert to fraction form
    275.94/380.73 = 159.51/x
  3. Step 3: Cross multiply
    275.94x = 380.73 × 159.51
  4. Step 4: Simplify right side
    275.94x = 60,730.24
  5. Step 5: Solve for x
    x = 60,730.24/275.94
  6. Step 6: Final answer
    x = 220.08

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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.