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Finding the Fourth Proportional to 277.90, 417.27 and 245.67

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Solution

The fourth proportional to 277.90, 417.27 and 245.67 is: 368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.90 : 417.27 = 245.67 : x
  2. Step 2: Convert to fraction form
    277.90/417.27 = 245.67/x
  3. Step 3: Cross multiply
    277.90x = 417.27 × 245.67
  4. Step 4: Simplify right side
    277.90x = 102,510.72
  5. Step 5: Solve for x
    x = 102,510.72/277.90
  6. Step 6: Final answer
    x = 368.88

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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.