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Finding the Fourth Proportional to 292.77, 438.21 and 277.74

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Solution

The fourth proportional to 292.77, 438.21 and 277.74 is: 415.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.77 : 438.21 = 277.74 : x
  2. Step 2: Convert to fraction form
    292.77/438.21 = 277.74/x
  3. Step 3: Cross multiply
    292.77x = 438.21 × 277.74
  4. Step 4: Simplify right side
    292.77x = 121,708.45
  5. Step 5: Solve for x
    x = 121,708.45/292.77
  6. Step 6: Final answer
    x = 415.71

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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.