Home / 1,011.45-1,517.54-623.95

Finding the Fourth Proportional to 1,011.45, 1,517.54 and 623.95

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Solution

The fourth proportional to 1,011.45, 1,517.54 and 623.95 is: 936.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.45 : 1,517.54 = 623.95 : x
  2. Step 2: Convert to fraction form
    1,011.45/1,517.54 = 623.95/x
  3. Step 3: Cross multiply
    1,011.45x = 1,517.54 × 623.95
  4. Step 4: Simplify right side
    1,011.45x = 946,869.08
  5. Step 5: Solve for x
    x = 946,869.08/1,011.45
  6. Step 6: Final answer
    x = 936.15

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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.