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Finding the Fourth Proportional to 535.88, 803.11 and 275.66

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Solution

The fourth proportional to 535.88, 803.11 and 275.66 is: 413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.88 : 803.11 = 275.66 : x
  2. Step 2: Convert to fraction form
    535.88/803.11 = 275.66/x
  3. Step 3: Cross multiply
    535.88x = 803.11 × 275.66
  4. Step 4: Simplify right side
    535.88x = 221,385.30
  5. Step 5: Solve for x
    x = 221,385.30/535.88
  6. Step 6: Final answer
    x = 413.12

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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.