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Finding the Fourth Proportional to 535.67, 740.45 and 492.61

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Solution

The fourth proportional to 535.67, 740.45 and 492.61 is: 680.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.67 : 740.45 = 492.61 : x
  2. Step 2: Convert to fraction form
    535.67/740.45 = 492.61/x
  3. Step 3: Cross multiply
    535.67x = 740.45 × 492.61
  4. Step 4: Simplify right side
    535.67x = 364,754.93
  5. Step 5: Solve for x
    x = 364,754.93/535.67
  6. Step 6: Final answer
    x = 680.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.