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Finding the Fourth Proportional to 2,020.68, 3,030.78 and 652.68

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Solution

The fourth proportional to 2,020.68, 3,030.78 and 652.68 is: 978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.68 : 3,030.78 = 652.68 : x
  2. Step 2: Convert to fraction form
    2,020.68/3,030.78 = 652.68/x
  3. Step 3: Cross multiply
    2,020.68x = 3,030.78 × 652.68
  4. Step 4: Simplify right side
    2,020.68x = 1,978,129.49
  5. Step 5: Solve for x
    x = 1,978,129.49/2,020.68
  6. Step 6: Final answer
    x = 978.94

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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.