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Finding the Fourth Proportional to 266.40, 368.04 and 192.72

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Solution

The fourth proportional to 266.40, 368.04 and 192.72 is: 266.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.40 : 368.04 = 192.72 : x
  2. Step 2: Convert to fraction form
    266.40/368.04 = 192.72/x
  3. Step 3: Cross multiply
    266.40x = 368.04 × 192.72
  4. Step 4: Simplify right side
    266.40x = 70,928.67
  5. Step 5: Solve for x
    x = 70,928.67/266.40
  6. Step 6: Final answer
    x = 266.25

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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.