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Finding the Fourth Proportional to 354.81, 528.46 and 353.06

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Solution

The fourth proportional to 354.81, 528.46 and 353.06 is: 525.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.81 : 528.46 = 353.06 : x
  2. Step 2: Convert to fraction form
    354.81/528.46 = 353.06/x
  3. Step 3: Cross multiply
    354.81x = 528.46 × 353.06
  4. Step 4: Simplify right side
    354.81x = 186,576.54
  5. Step 5: Solve for x
    x = 186,576.54/354.81
  6. Step 6: Final answer
    x = 525.84

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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.