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Finding the Fourth Proportional to 1,210.49, 1,812.60 and 1,015.02

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Solution

The fourth proportional to 1,210.49, 1,812.60 and 1,015.02 is: 1,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.49 : 1,812.60 = 1,015.02 : x
  2. Step 2: Convert to fraction form
    1,210.49/1,812.60 = 1,015.02/x
  3. Step 3: Cross multiply
    1,210.49x = 1,812.60 × 1,015.02
  4. Step 4: Simplify right side
    1,210.49x = 1,839,825.25
  5. Step 5: Solve for x
    x = 1,839,825.25/1,210.49
  6. Step 6: Final answer
    x = 1,519.91

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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.