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Finding the Fourth Proportional to 734.90, 1,101.40 and 442.22

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Solution

The fourth proportional to 734.90, 1,101.40 and 442.22 is: 662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.90 : 1,101.40 = 442.22 : x
  2. Step 2: Convert to fraction form
    734.90/1,101.40 = 442.22/x
  3. Step 3: Cross multiply
    734.90x = 1,101.40 × 442.22
  4. Step 4: Simplify right side
    734.90x = 487,054.50
  5. Step 5: Solve for x
    x = 487,054.50/734.90
  6. Step 6: Final answer
    x = 662.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.