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Finding the Fourth Proportional to 1,695.41, 2,541.01 and 770.70

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Solution

The fourth proportional to 1,695.41, 2,541.01 and 770.70 is: 1,155.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.41 : 2,541.01 = 770.70 : x
  2. Step 2: Convert to fraction form
    1,695.41/2,541.01 = 770.70/x
  3. Step 3: Cross multiply
    1,695.41x = 2,541.01 × 770.70
  4. Step 4: Simplify right side
    1,695.41x = 1,958,356.41
  5. Step 5: Solve for x
    x = 1,958,356.41/1,695.41
  6. Step 6: Final answer
    x = 1,155.09

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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.