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Finding the Fourth Proportional to 354.79, 532.01 and 162.25

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Solution

The fourth proportional to 354.79, 532.01 and 162.25 is: 243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.79 : 532.01 = 162.25 : x
  2. Step 2: Convert to fraction form
    354.79/532.01 = 162.25/x
  3. Step 3: Cross multiply
    354.79x = 532.01 × 162.25
  4. Step 4: Simplify right side
    354.79x = 86,317.81
  5. Step 5: Solve for x
    x = 86,317.81/354.79
  6. Step 6: Final answer
    x = 243.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.