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Finding the Fourth Proportional to 1,517.67, 2,277.45 and 652.05

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Solution

The fourth proportional to 1,517.67, 2,277.45 and 652.05 is: 978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.67 : 2,277.45 = 652.05 : x
  2. Step 2: Convert to fraction form
    1,517.67/2,277.45 = 652.05/x
  3. Step 3: Cross multiply
    1,517.67x = 2,277.45 × 652.05
  4. Step 4: Simplify right side
    1,517.67x = 1,485,011.27
  5. Step 5: Solve for x
    x = 1,485,011.27/1,517.67
  6. Step 6: Final answer
    x = 978.48

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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.