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Finding the Fourth Proportional to 348.52, 520.58 and 328.53

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Solution

The fourth proportional to 348.52, 520.58 and 328.53 is: 490.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.52 : 520.58 = 328.53 : x
  2. Step 2: Convert to fraction form
    348.52/520.58 = 328.53/x
  3. Step 3: Cross multiply
    348.52x = 520.58 × 328.53
  4. Step 4: Simplify right side
    348.52x = 171,024.92
  5. Step 5: Solve for x
    x = 171,024.92/348.52
  6. Step 6: Final answer
    x = 490.71

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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.