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Finding the Fourth Proportional to 268.98, 371.16 and 152.54

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Solution

The fourth proportional to 268.98, 371.16 and 152.54 is: 210.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.98 : 371.16 = 152.54 : x
  2. Step 2: Convert to fraction form
    268.98/371.16 = 152.54/x
  3. Step 3: Cross multiply
    268.98x = 371.16 × 152.54
  4. Step 4: Simplify right side
    268.98x = 56,616.75
  5. Step 5: Solve for x
    x = 56,616.75/268.98
  6. Step 6: Final answer
    x = 210.49

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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.