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Finding the Fourth Proportional to 277.93, 383.20 and 189.31

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Solution

The fourth proportional to 277.93, 383.20 and 189.31 is: 261.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.93 : 383.20 = 189.31 : x
  2. Step 2: Convert to fraction form
    277.93/383.20 = 189.31/x
  3. Step 3: Cross multiply
    277.93x = 383.20 × 189.31
  4. Step 4: Simplify right side
    277.93x = 72,543.59
  5. Step 5: Solve for x
    x = 72,543.59/277.93
  6. Step 6: Final answer
    x = 261.01

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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.