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Finding the Fourth Proportional to 874.06, 1,302.63 and 846.38

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Solution

The fourth proportional to 874.06, 1,302.63 and 846.38 is: 1,261.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    874.06 : 1,302.63 = 846.38 : x
  2. Step 2: Convert to fraction form
    874.06/1,302.63 = 846.38/x
  3. Step 3: Cross multiply
    874.06x = 1,302.63 × 846.38
  4. Step 4: Simplify right side
    874.06x = 1,102,519.98
  5. Step 5: Solve for x
    x = 1,102,519.98/874.06
  6. Step 6: Final answer
    x = 1,261.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.