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Finding the Fourth Proportional to 354.12, 533.79 and 348.65

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Solution

The fourth proportional to 354.12, 533.79 and 348.65 is: 525.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.12 : 533.79 = 348.65 : x
  2. Step 2: Convert to fraction form
    354.12/533.79 = 348.65/x
  3. Step 3: Cross multiply
    354.12x = 533.79 × 348.65
  4. Step 4: Simplify right side
    354.12x = 186,108.22
  5. Step 5: Solve for x
    x = 186,108.22/354.12
  6. Step 6: Final answer
    x = 525.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.