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Finding the Fourth Proportional to 901.30, 1,352.48 and 324.22

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Solution

The fourth proportional to 901.30, 1,352.48 and 324.22 is: 486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.30 : 1,352.48 = 324.22 : x
  2. Step 2: Convert to fraction form
    901.30/1,352.48 = 324.22/x
  3. Step 3: Cross multiply
    901.30x = 1,352.48 × 324.22
  4. Step 4: Simplify right side
    901.30x = 438,495.11
  5. Step 5: Solve for x
    x = 438,495.11/901.30
  6. Step 6: Final answer
    x = 486.52

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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.