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Finding the Fourth Proportional to 352.56, 525.74 and 311.25

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Solution

The fourth proportional to 352.56, 525.74 and 311.25 is: 464.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.56 : 525.74 = 311.25 : x
  2. Step 2: Convert to fraction form
    352.56/525.74 = 311.25/x
  3. Step 3: Cross multiply
    352.56x = 525.74 × 311.25
  4. Step 4: Simplify right side
    352.56x = 163,635.02
  5. Step 5: Solve for x
    x = 163,635.02/352.56
  6. Step 6: Final answer
    x = 464.13

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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.