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Finding the Fourth Proportional to 348.19, 524.72 and 331.72

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Solution

The fourth proportional to 348.19, 524.72 and 331.72 is: 499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.19 : 524.72 = 331.72 : x
  2. Step 2: Convert to fraction form
    348.19/524.72 = 331.72/x
  3. Step 3: Cross multiply
    348.19x = 524.72 × 331.72
  4. Step 4: Simplify right side
    348.19x = 174,060.12
  5. Step 5: Solve for x
    x = 174,060.12/348.19
  6. Step 6: Final answer
    x = 499.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.