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Finding the Fourth Proportional to 1,411.55, 2,116.37 and 544.85

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Solution

The fourth proportional to 1,411.55, 2,116.37 and 544.85 is: 816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.55 : 2,116.37 = 544.85 : x
  2. Step 2: Convert to fraction form
    1,411.55/2,116.37 = 544.85/x
  3. Step 3: Cross multiply
    1,411.55x = 2,116.37 × 544.85
  4. Step 4: Simplify right side
    1,411.55x = 1,153,094.97
  5. Step 5: Solve for x
    x = 1,153,094.97/1,411.55
  6. Step 6: Final answer
    x = 816.90

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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.