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Finding the Fourth Proportional to 1,366.70, 2,048.98 and 636.18

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Solution

The fourth proportional to 1,366.70, 2,048.98 and 636.18 is: 953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366.70 : 2,048.98 = 636.18 : x
  2. Step 2: Convert to fraction form
    1,366.70/2,048.98 = 636.18/x
  3. Step 3: Cross multiply
    1,366.70x = 2,048.98 × 636.18
  4. Step 4: Simplify right side
    1,366.70x = 1,303,506.67
  5. Step 5: Solve for x
    x = 1,303,506.67/1,366.70
  6. Step 6: Final answer
    x = 953.77

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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.