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Finding the Fourth Proportional to 1,679.49, 2,519.27 and 802.10

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Solution

The fourth proportional to 1,679.49, 2,519.27 and 802.10 is: 1,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.49 : 2,519.27 = 802.10 : x
  2. Step 2: Convert to fraction form
    1,679.49/2,519.27 = 802.10/x
  3. Step 3: Cross multiply
    1,679.49x = 2,519.27 × 802.10
  4. Step 4: Simplify right side
    1,679.49x = 2,020,695.88
  5. Step 5: Solve for x
    x = 2,020,695.88/1,679.49
  6. Step 6: Final answer
    x = 1,203.16

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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.