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Finding the Fourth Proportional to 845.78, 1,267.59 and 735.64

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Solution

The fourth proportional to 845.78, 1,267.59 and 735.64 is: 1,102.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.78 : 1,267.59 = 735.64 : x
  2. Step 2: Convert to fraction form
    845.78/1,267.59 = 735.64/x
  3. Step 3: Cross multiply
    845.78x = 1,267.59 × 735.64
  4. Step 4: Simplify right side
    845.78x = 932,483.98
  5. Step 5: Solve for x
    x = 932,483.98/845.78
  6. Step 6: Final answer
    x = 1,102.52

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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.