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Finding the Fourth Proportional to 546.37, 815.85 and 479.98

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Solution

The fourth proportional to 546.37, 815.85 and 479.98 is: 716.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.37 : 815.85 = 479.98 : x
  2. Step 2: Convert to fraction form
    546.37/815.85 = 479.98/x
  3. Step 3: Cross multiply
    546.37x = 815.85 × 479.98
  4. Step 4: Simplify right side
    546.37x = 391,591.68
  5. Step 5: Solve for x
    x = 391,591.68/546.37
  6. Step 6: Final answer
    x = 716.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.