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Finding the Fourth Proportional to 901.31, 1,352.11 and 324.32

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Solution

The fourth proportional to 901.31, 1,352.11 and 324.32 is: 486.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.31 : 1,352.11 = 324.32 : x
  2. Step 2: Convert to fraction form
    901.31/1,352.11 = 324.32/x
  3. Step 3: Cross multiply
    901.31x = 1,352.11 × 324.32
  4. Step 4: Simplify right side
    901.31x = 438,518.88
  5. Step 5: Solve for x
    x = 438,518.88/901.31
  6. Step 6: Final answer
    x = 486.53

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Double scale
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1.5x scale

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.