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Finding the Fourth Proportional to 1,959.34, 2,938.75 and 498.46

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Solution

The fourth proportional to 1,959.34, 2,938.75 and 498.46 is: 747.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.34 : 2,938.75 = 498.46 : x
  2. Step 2: Convert to fraction form
    1,959.34/2,938.75 = 498.46/x
  3. Step 3: Cross multiply
    1,959.34x = 2,938.75 × 498.46
  4. Step 4: Simplify right side
    1,959.34x = 1,464,849.33
  5. Step 5: Solve for x
    x = 1,464,849.33/1,959.34
  6. Step 6: Final answer
    x = 747.62

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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.