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Finding the Fourth Proportional to 1,552.75, 2,329.26 and 398.50

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Solution

The fourth proportional to 1,552.75, 2,329.26 and 398.50 is: 597.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.75 : 2,329.26 = 398.50 : x
  2. Step 2: Convert to fraction form
    1,552.75/2,329.26 = 398.50/x
  3. Step 3: Cross multiply
    1,552.75x = 2,329.26 × 398.50
  4. Step 4: Simplify right side
    1,552.75x = 928,210.11
  5. Step 5: Solve for x
    x = 928,210.11/1,552.75
  6. Step 6: Final answer
    x = 597.78

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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.