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Finding the Fourth Proportional to 348.79, 520.12 and 296.55

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Solution

The fourth proportional to 348.79, 520.12 and 296.55 is: 442.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.79 : 520.12 = 296.55 : x
  2. Step 2: Convert to fraction form
    348.79/520.12 = 296.55/x
  3. Step 3: Cross multiply
    348.79x = 520.12 × 296.55
  4. Step 4: Simplify right side
    348.79x = 154,241.59
  5. Step 5: Solve for x
    x = 154,241.59/348.79
  6. Step 6: Final answer
    x = 442.22

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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.