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Finding the Fourth Proportional to 350.30, 525.61 and 155.42

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Solution

The fourth proportional to 350.30, 525.61 and 155.42 is: 233.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.30 : 525.61 = 155.42 : x
  2. Step 2: Convert to fraction form
    350.30/525.61 = 155.42/x
  3. Step 3: Cross multiply
    350.30x = 525.61 × 155.42
  4. Step 4: Simplify right side
    350.30x = 81,690.31
  5. Step 5: Solve for x
    x = 81,690.31/350.30
  6. Step 6: Final answer
    x = 233.20

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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.