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Finding the Fourth Proportional to 1,864.58, 2,797.06 and 769.46

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Solution

The fourth proportional to 1,864.58, 2,797.06 and 769.46 is: 1,154.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.58 : 2,797.06 = 769.46 : x
  2. Step 2: Convert to fraction form
    1,864.58/2,797.06 = 769.46/x
  3. Step 3: Cross multiply
    1,864.58x = 2,797.06 × 769.46
  4. Step 4: Simplify right side
    1,864.58x = 2,152,225.79
  5. Step 5: Solve for x
    x = 2,152,225.79/1,864.58
  6. Step 6: Final answer
    x = 1,154.27

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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.