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Finding the Fourth Proportional to 1,865.68, 2,798.87 and 616.34

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Solution

The fourth proportional to 1,865.68, 2,798.87 and 616.34 is: 924.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.68 : 2,798.87 = 616.34 : x
  2. Step 2: Convert to fraction form
    1,865.68/2,798.87 = 616.34/x
  3. Step 3: Cross multiply
    1,865.68x = 2,798.87 × 616.34
  4. Step 4: Simplify right side
    1,865.68x = 1,725,055.54
  5. Step 5: Solve for x
    x = 1,725,055.54/1,865.68
  6. Step 6: Final answer
    x = 924.63

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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.