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Finding the Fourth Proportional to 535.31, 802.70 and 275.43

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Solution

The fourth proportional to 535.31, 802.70 and 275.43 is: 413.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.31 : 802.70 = 275.43 : x
  2. Step 2: Convert to fraction form
    535.31/802.70 = 275.43/x
  3. Step 3: Cross multiply
    535.31x = 802.70 × 275.43
  4. Step 4: Simplify right side
    535.31x = 221,086.28
  5. Step 5: Solve for x
    x = 221,086.28/535.31
  6. Step 6: Final answer
    x = 413.01

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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.