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Finding the Fourth Proportional to 1,510.67, 2,266.02 and 778.70

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Solution

The fourth proportional to 1,510.67, 2,266.02 and 778.70 is: 1,168.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.67 : 2,266.02 = 778.70 : x
  2. Step 2: Convert to fraction form
    1,510.67/2,266.02 = 778.70/x
  3. Step 3: Cross multiply
    1,510.67x = 2,266.02 × 778.70
  4. Step 4: Simplify right side
    1,510.67x = 1,764,555.44
  5. Step 5: Solve for x
    x = 1,764,555.44/1,510.67
  6. Step 6: Final answer
    x = 1,168.06

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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.