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Finding the Fourth Proportional to 1,329.88, 1,995.08 and 452.28

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Solution

The fourth proportional to 1,329.88, 1,995.08 and 452.28 is: 678.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.88 : 1,995.08 = 452.28 : x
  2. Step 2: Convert to fraction form
    1,329.88/1,995.08 = 452.28/x
  3. Step 3: Cross multiply
    1,329.88x = 1,995.08 × 452.28
  4. Step 4: Simplify right side
    1,329.88x = 902,334.78
  5. Step 5: Solve for x
    x = 902,334.78/1,329.88
  6. Step 6: Final answer
    x = 678.51

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1.5x scale

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.