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Finding the Fourth Proportional to 1,552.94, 2,328.31 and 628.22

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Solution

The fourth proportional to 1,552.94, 2,328.31 and 628.22 is: 941.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.94 : 2,328.31 = 628.22 : x
  2. Step 2: Convert to fraction form
    1,552.94/2,328.31 = 628.22/x
  3. Step 3: Cross multiply
    1,552.94x = 2,328.31 × 628.22
  4. Step 4: Simplify right side
    1,552.94x = 1,462,697.51
  5. Step 5: Solve for x
    x = 1,462,697.51/1,552.94
  6. Step 6: Final answer
    x = 941.89

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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.