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Finding the Fourth Proportional to 212.94, 294.35 and 177.77

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Solution

The fourth proportional to 212.94, 294.35 and 177.77 is: 245.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.94 : 294.35 = 177.77 : x
  2. Step 2: Convert to fraction form
    212.94/294.35 = 177.77/x
  3. Step 3: Cross multiply
    212.94x = 294.35 × 177.77
  4. Step 4: Simplify right side
    212.94x = 52,324.24
  5. Step 5: Solve for x
    x = 52,324.24/212.94
  6. Step 6: Final answer
    x = 245.72

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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.