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Finding the Fourth Proportional to 348.30, 521.82 and 266.94

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Solution

The fourth proportional to 348.30, 521.82 and 266.94 is: 399.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.30 : 521.82 = 266.94 : x
  2. Step 2: Convert to fraction form
    348.30/521.82 = 266.94/x
  3. Step 3: Cross multiply
    348.30x = 521.82 × 266.94
  4. Step 4: Simplify right side
    348.30x = 139,294.63
  5. Step 5: Solve for x
    x = 139,294.63/348.30
  6. Step 6: Final answer
    x = 399.93

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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.