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Finding the Fourth Proportional to 1,544.55, 2,315.61 and 722.00

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Solution

The fourth proportional to 1,544.55, 2,315.61 and 722.00 is: 1,082.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.55 : 2,315.61 = 722.00 : x
  2. Step 2: Convert to fraction form
    1,544.55/2,315.61 = 722.00/x
  3. Step 3: Cross multiply
    1,544.55x = 2,315.61 × 722.00
  4. Step 4: Simplify right side
    1,544.55x = 1,671,858.84
  5. Step 5: Solve for x
    x = 1,671,858.84/1,544.55
  6. Step 6: Final answer
    x = 1,082.42

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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.