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Finding the Fourth Proportional to 1,284.42, 1,925.54 and 544.00

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Solution

The fourth proportional to 1,284.42, 1,925.54 and 544.00 is: 815.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.42 : 1,925.54 = 544.00 : x
  2. Step 2: Convert to fraction form
    1,284.42/1,925.54 = 544.00/x
  3. Step 3: Cross multiply
    1,284.42x = 1,925.54 × 544.00
  4. Step 4: Simplify right side
    1,284.42x = 1,047,491.88
  5. Step 5: Solve for x
    x = 1,047,491.88/1,284.42
  6. Step 6: Final answer
    x = 815.54

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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.