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Finding the Fourth Proportional to 535.79, 739.05 and 472.61

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Solution

The fourth proportional to 535.79, 739.05 and 472.61 is: 651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.79 : 739.05 = 472.61 : x
  2. Step 2: Convert to fraction form
    535.79/739.05 = 472.61/x
  3. Step 3: Cross multiply
    535.79x = 739.05 × 472.61
  4. Step 4: Simplify right side
    535.79x = 349,282.42
  5. Step 5: Solve for x
    x = 349,282.42/535.79
  6. Step 6: Final answer
    x = 651.90

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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.