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Finding the Fourth Proportional to 264.48, 398.72 and 222

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Solution

The fourth proportional to 264.48, 398.72 and 222 is: 334.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.48 : 398.72 = 222 : x
  2. Step 2: Convert to fraction form
    264.48/398.72 = 222/x
  3. Step 3: Cross multiply
    264.48x = 398.72 × 222
  4. Step 4: Simplify right side
    264.48x = 88,515.84
  5. Step 5: Solve for x
    x = 88,515.84/264.48
  6. Step 6: Final answer
    x = 334.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.