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Finding the Fourth Proportional to 1,095.03, 1,638.81 and 852.66

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Solution

The fourth proportional to 1,095.03, 1,638.81 and 852.66 is: 1,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.03 : 1,638.81 = 852.66 : x
  2. Step 2: Convert to fraction form
    1,095.03/1,638.81 = 852.66/x
  3. Step 3: Cross multiply
    1,095.03x = 1,638.81 × 852.66
  4. Step 4: Simplify right side
    1,095.03x = 1,397,347.73
  5. Step 5: Solve for x
    x = 1,397,347.73/1,095.03
  6. Step 6: Final answer
    x = 1,276.08

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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.