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Finding the Fourth Proportional to 734.58, 1,102.93 and 644.37

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Solution

The fourth proportional to 734.58, 1,102.93 and 644.37 is: 967.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.58 : 1,102.93 = 644.37 : x
  2. Step 2: Convert to fraction form
    734.58/1,102.93 = 644.37/x
  3. Step 3: Cross multiply
    734.58x = 1,102.93 × 644.37
  4. Step 4: Simplify right side
    734.58x = 710,691.78
  5. Step 5: Solve for x
    x = 710,691.78/734.58
  6. Step 6: Final answer
    x = 967.48

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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.