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Finding the Fourth Proportional to 1,135.23, 1,703.36 and 549.91

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Solution

The fourth proportional to 1,135.23, 1,703.36 and 549.91 is: 825.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.23 : 1,703.36 = 549.91 : x
  2. Step 2: Convert to fraction form
    1,135.23/1,703.36 = 549.91/x
  3. Step 3: Cross multiply
    1,135.23x = 1,703.36 × 549.91
  4. Step 4: Simplify right side
    1,135.23x = 936,694.70
  5. Step 5: Solve for x
    x = 936,694.70/1,135.23
  6. Step 6: Final answer
    x = 825.11

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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.