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Finding the Fourth Proportional to 1,790.31, 2,684.38 and 802.94

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Solution

The fourth proportional to 1,790.31, 2,684.38 and 802.94 is: 1,203.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.31 : 2,684.38 = 802.94 : x
  2. Step 2: Convert to fraction form
    1,790.31/2,684.38 = 802.94/x
  3. Step 3: Cross multiply
    1,790.31x = 2,684.38 × 802.94
  4. Step 4: Simplify right side
    1,790.31x = 2,155,384.18
  5. Step 5: Solve for x
    x = 2,155,384.18/1,790.31
  6. Step 6: Final answer
    x = 1,203.92

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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.