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Finding the Fourth Proportional to 277.70, 416.73 and 156.05

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Solution

The fourth proportional to 277.70, 416.73 and 156.05 is: 234.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.70 : 416.73 = 156.05 : x
  2. Step 2: Convert to fraction form
    277.70/416.73 = 156.05/x
  3. Step 3: Cross multiply
    277.70x = 416.73 × 156.05
  4. Step 4: Simplify right side
    277.70x = 65,030.72
  5. Step 5: Solve for x
    x = 65,030.72/277.70
  6. Step 6: Final answer
    x = 234.18

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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.