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Finding the Fourth Proportional to 1,036.04, 1,553.10 and 842.12

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Solution

The fourth proportional to 1,036.04, 1,553.10 and 842.12 is: 1,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.04 : 1,553.10 = 842.12 : x
  2. Step 2: Convert to fraction form
    1,036.04/1,553.10 = 842.12/x
  3. Step 3: Cross multiply
    1,036.04x = 1,553.10 × 842.12
  4. Step 4: Simplify right side
    1,036.04x = 1,307,896.57
  5. Step 5: Solve for x
    x = 1,307,896.57/1,036.04
  6. Step 6: Final answer
    x = 1,262.40

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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.