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Finding the Fourth Proportional to 901.39, 1,352.45 and 324.31

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Solution

The fourth proportional to 901.39, 1,352.45 and 324.31 is: 486.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.39 : 1,352.45 = 324.31 : x
  2. Step 2: Convert to fraction form
    901.39/1,352.45 = 324.31/x
  3. Step 3: Cross multiply
    901.39x = 1,352.45 × 324.31
  4. Step 4: Simplify right side
    901.39x = 438,613.06
  5. Step 5: Solve for x
    x = 438,613.06/901.39
  6. Step 6: Final answer
    x = 486.60

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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.