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Finding the Fourth Proportional to 1,031.49, 1,554.33 and 852.90

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Solution

The fourth proportional to 1,031.49, 1,554.33 and 852.90 is: 1,285.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.49 : 1,554.33 = 852.90 : x
  2. Step 2: Convert to fraction form
    1,031.49/1,554.33 = 852.90/x
  3. Step 3: Cross multiply
    1,031.49x = 1,554.33 × 852.90
  4. Step 4: Simplify right side
    1,031.49x = 1,325,688.06
  5. Step 5: Solve for x
    x = 1,325,688.06/1,031.49
  6. Step 6: Final answer
    x = 1,285.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.