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Finding the Fourth Proportional to 1,045.56, 1,442.16 and 835.38

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Solution

The fourth proportional to 1,045.56, 1,442.16 and 835.38 is: 1,152.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.56 : 1,442.16 = 835.38 : x
  2. Step 2: Convert to fraction form
    1,045.56/1,442.16 = 835.38/x
  3. Step 3: Cross multiply
    1,045.56x = 1,442.16 × 835.38
  4. Step 4: Simplify right side
    1,045.56x = 1,204,751.62
  5. Step 5: Solve for x
    x = 1,204,751.62/1,045.56
  6. Step 6: Final answer
    x = 1,152.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.