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Finding the Fourth Proportional to 268.65, 370.68 and 158.10

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Solution

The fourth proportional to 268.65, 370.68 and 158.10 is: 218.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.65 : 370.68 = 158.10 : x
  2. Step 2: Convert to fraction form
    268.65/370.68 = 158.10/x
  3. Step 3: Cross multiply
    268.65x = 370.68 × 158.10
  4. Step 4: Simplify right side
    268.65x = 58,604.51
  5. Step 5: Solve for x
    x = 58,604.51/268.65
  6. Step 6: Final answer
    x = 218.14

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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.