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Finding the Fourth Proportional to 802.73, 1,107.78 and 448.68

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Solution

The fourth proportional to 802.73, 1,107.78 and 448.68 is: 619.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.73 : 1,107.78 = 448.68 : x
  2. Step 2: Convert to fraction form
    802.73/1,107.78 = 448.68/x
  3. Step 3: Cross multiply
    802.73x = 1,107.78 × 448.68
  4. Step 4: Simplify right side
    802.73x = 497,038.73
  5. Step 5: Solve for x
    x = 497,038.73/802.73
  6. Step 6: Final answer
    x = 619.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.