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Finding the Fourth Proportional to 268.80, 370.94 and 152.36

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Solution

The fourth proportional to 268.80, 370.94 and 152.36 is: 210.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.80 : 370.94 = 152.36 : x
  2. Step 2: Convert to fraction form
    268.80/370.94 = 152.36/x
  3. Step 3: Cross multiply
    268.80x = 370.94 × 152.36
  4. Step 4: Simplify right side
    268.80x = 56,513.80
  5. Step 5: Solve for x
    x = 56,513.80/268.80
  6. Step 6: Final answer
    x = 210.24

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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.