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Finding the Fourth Proportional to 1,350.68, 1,864.49 and 1,210.55

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Solution

The fourth proportional to 1,350.68, 1,864.49 and 1,210.55 is: 1,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.68 : 1,864.49 = 1,210.55 : x
  2. Step 2: Convert to fraction form
    1,350.68/1,864.49 = 1,210.55/x
  3. Step 3: Cross multiply
    1,350.68x = 1,864.49 × 1,210.55
  4. Step 4: Simplify right side
    1,350.68x = 2,257,042.99
  5. Step 5: Solve for x
    x = 2,257,042.99/1,350.68
  6. Step 6: Final answer
    x = 1,671.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.