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Finding the Fourth Proportional to 802.31, 1,203.59 and 282.22

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Solution

The fourth proportional to 802.31, 1,203.59 and 282.22 is: 423.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.31 : 1,203.59 = 282.22 : x
  2. Step 2: Convert to fraction form
    802.31/1,203.59 = 282.22/x
  3. Step 3: Cross multiply
    802.31x = 1,203.59 × 282.22
  4. Step 4: Simplify right side
    802.31x = 339,672.75
  5. Step 5: Solve for x
    x = 339,672.75/802.31
  6. Step 6: Final answer
    x = 423.37

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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.