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Finding the Fourth Proportional to 802.45, 1,107.13 and 537.31

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Solution

The fourth proportional to 802.45, 1,107.13 and 537.31 is: 741.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.45 : 1,107.13 = 537.31 : x
  2. Step 2: Convert to fraction form
    802.45/1,107.13 = 537.31/x
  3. Step 3: Cross multiply
    802.45x = 1,107.13 × 537.31
  4. Step 4: Simplify right side
    802.45x = 594,872.02
  5. Step 5: Solve for x
    x = 594,872.02/802.45
  6. Step 6: Final answer
    x = 741.32

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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.