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Finding the Fourth Proportional to 1,518.88, 2,280.48 and 997.24

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Solution

The fourth proportional to 1,518.88, 2,280.48 and 997.24 is: 1,497.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.88 : 2,280.48 = 997.24 : x
  2. Step 2: Convert to fraction form
    1,518.88/2,280.48 = 997.24/x
  3. Step 3: Cross multiply
    1,518.88x = 2,280.48 × 997.24
  4. Step 4: Simplify right side
    1,518.88x = 2,274,185.88
  5. Step 5: Solve for x
    x = 2,274,185.88/1,518.88
  6. Step 6: Final answer
    x = 1,497.28

Related Problems

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Double scale
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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.