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Finding the Fourth Proportional to 535.44, 802.56 and 243.18

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Solution

The fourth proportional to 535.44, 802.56 and 243.18 is: 364.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.44 : 802.56 = 243.18 : x
  2. Step 2: Convert to fraction form
    535.44/802.56 = 243.18/x
  3. Step 3: Cross multiply
    535.44x = 802.56 × 243.18
  4. Step 4: Simplify right side
    535.44x = 195,166.54
  5. Step 5: Solve for x
    x = 195,166.54/535.44
  6. Step 6: Final answer
    x = 364.50

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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.