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Finding the Fourth Proportional to 348.40, 520.58 and 304.48

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Solution

The fourth proportional to 348.40, 520.58 and 304.48 is: 454.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.40 : 520.58 = 304.48 : x
  2. Step 2: Convert to fraction form
    348.40/520.58 = 304.48/x
  3. Step 3: Cross multiply
    348.40x = 520.58 × 304.48
  4. Step 4: Simplify right side
    348.40x = 158,506.20
  5. Step 5: Solve for x
    x = 158,506.20/348.40
  6. Step 6: Final answer
    x = 454.95

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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.