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Finding the Fourth Proportional to 535.40, 803.84 and 492.47

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Solution

The fourth proportional to 535.40, 803.84 and 492.47 is: 739.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.40 : 803.84 = 492.47 : x
  2. Step 2: Convert to fraction form
    535.40/803.84 = 492.47/x
  3. Step 3: Cross multiply
    535.40x = 803.84 × 492.47
  4. Step 4: Simplify right side
    535.40x = 395,860.60
  5. Step 5: Solve for x
    x = 395,860.60/535.40
  6. Step 6: Final answer
    x = 739.38

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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.