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Finding the Fourth Proportional to 1,048.67, 1,572.74 and 308.28

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Solution

The fourth proportional to 1,048.67, 1,572.74 and 308.28 is: 462.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.67 : 1,572.74 = 308.28 : x
  2. Step 2: Convert to fraction form
    1,048.67/1,572.74 = 308.28/x
  3. Step 3: Cross multiply
    1,048.67x = 1,572.74 × 308.28
  4. Step 4: Simplify right side
    1,048.67x = 484,842.75
  5. Step 5: Solve for x
    x = 484,842.75/1,048.67
  6. Step 6: Final answer
    x = 462.34

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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.