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Finding the Fourth Proportional to 1,860.68, 2,790.51 and 544.40

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Solution

The fourth proportional to 1,860.68, 2,790.51 and 544.40 is: 816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.68 : 2,790.51 = 544.40 : x
  2. Step 2: Convert to fraction form
    1,860.68/2,790.51 = 544.40/x
  3. Step 3: Cross multiply
    1,860.68x = 2,790.51 × 544.40
  4. Step 4: Simplify right side
    1,860.68x = 1,519,153.64
  5. Step 5: Solve for x
    x = 1,519,153.64/1,860.68
  6. Step 6: Final answer
    x = 816.45

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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.