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Finding the Fourth Proportional to 268.58, 370.51 and 157.99

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Solution

The fourth proportional to 268.58, 370.51 and 157.99 is: 217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.58 : 370.51 = 157.99 : x
  2. Step 2: Convert to fraction form
    268.58/370.51 = 157.99/x
  3. Step 3: Cross multiply
    268.58x = 370.51 × 157.99
  4. Step 4: Simplify right side
    268.58x = 58,534.23
  5. Step 5: Solve for x
    x = 58,534.23/268.58
  6. Step 6: Final answer
    x = 217.94

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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.