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Finding the Fourth Proportional to 1,095.99, 1,512.49 and 623.95

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Solution

The fourth proportional to 1,095.99, 1,512.49 and 623.95 is: 861.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.99 : 1,512.49 = 623.95 : x
  2. Step 2: Convert to fraction form
    1,095.99/1,512.49 = 623.95/x
  3. Step 3: Cross multiply
    1,095.99x = 1,512.49 × 623.95
  4. Step 4: Simplify right side
    1,095.99x = 943,718.14
  5. Step 5: Solve for x
    x = 943,718.14/1,095.99
  6. Step 6: Final answer
    x = 861.06

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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.