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Finding the Fourth Proportional to 735.40, 1,103.32 and 260.52

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Solution

The fourth proportional to 735.40, 1,103.32 and 260.52 is: 390.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.40 : 1,103.32 = 260.52 : x
  2. Step 2: Convert to fraction form
    735.40/1,103.32 = 260.52/x
  3. Step 3: Cross multiply
    735.40x = 1,103.32 × 260.52
  4. Step 4: Simplify right side
    735.40x = 287,436.93
  5. Step 5: Solve for x
    x = 287,436.93/735.40
  6. Step 6: Final answer
    x = 390.86

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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.