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Finding the Fourth Proportional to 273.47, 377.40 and 157.03

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Solution

The fourth proportional to 273.47, 377.40 and 157.03 is: 216.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.47 : 377.40 = 157.03 : x
  2. Step 2: Convert to fraction form
    273.47/377.40 = 157.03/x
  3. Step 3: Cross multiply
    273.47x = 377.40 × 157.03
  4. Step 4: Simplify right side
    273.47x = 59,263.00
  5. Step 5: Solve for x
    x = 59,263.00/273.47
  6. Step 6: Final answer
    x = 216.71

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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.