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Finding the Fourth Proportional to 1,699.63, 2,548.23 and 774.71

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Solution

The fourth proportional to 1,699.63, 2,548.23 and 774.71 is: 1,161.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.63 : 2,548.23 = 774.71 : x
  2. Step 2: Convert to fraction form
    1,699.63/2,548.23 = 774.71/x
  3. Step 3: Cross multiply
    1,699.63x = 2,548.23 × 774.71
  4. Step 4: Simplify right side
    1,699.63x = 1,974,133.17
  5. Step 5: Solve for x
    x = 1,974,133.17/1,699.63
  6. Step 6: Final answer
    x = 1,161.51

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1.5x scale

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.