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Finding the Fourth Proportional to 345.54, 479.72 and 335.52

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Solution

The fourth proportional to 345.54, 479.72 and 335.52 is: 465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.54 : 479.72 = 335.52 : x
  2. Step 2: Convert to fraction form
    345.54/479.72 = 335.52/x
  3. Step 3: Cross multiply
    345.54x = 479.72 × 335.52
  4. Step 4: Simplify right side
    345.54x = 160,953.98
  5. Step 5: Solve for x
    x = 160,953.98/345.54
  6. Step 6: Final answer
    x = 465.80

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.