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Finding the Fourth Proportional to 1,969.72, 2,954.35 and 508.76

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Solution

The fourth proportional to 1,969.72, 2,954.35 and 508.76 is: 763.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.72 : 2,954.35 = 508.76 : x
  2. Step 2: Convert to fraction form
    1,969.72/2,954.35 = 508.76/x
  3. Step 3: Cross multiply
    1,969.72x = 2,954.35 × 508.76
  4. Step 4: Simplify right side
    1,969.72x = 1,503,039.06
  5. Step 5: Solve for x
    x = 1,503,039.06/1,969.72
  6. Step 6: Final answer
    x = 763.07

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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.