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Finding the Fourth Proportional to 2,068.80, 3,103.14 and 508.80

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Solution

The fourth proportional to 2,068.80, 3,103.14 and 508.80 is: 763.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,068.80 : 3,103.14 = 508.80 : x
  2. Step 2: Convert to fraction form
    2,068.80/3,103.14 = 508.80/x
  3. Step 3: Cross multiply
    2,068.80x = 3,103.14 × 508.80
  4. Step 4: Simplify right side
    2,068.80x = 1,578,877.63
  5. Step 5: Solve for x
    x = 1,578,877.63/2,068.80
  6. Step 6: Final answer
    x = 763.19

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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.