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Finding the Fourth Proportional to 901.69, 1,352.53 and 217.69

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Solution

The fourth proportional to 901.69, 1,352.53 and 217.69 is: 326.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.69 : 1,352.53 = 217.69 : x
  2. Step 2: Convert to fraction form
    901.69/1,352.53 = 217.69/x
  3. Step 3: Cross multiply
    901.69x = 1,352.53 × 217.69
  4. Step 4: Simplify right side
    901.69x = 294,429.15
  5. Step 5: Solve for x
    x = 294,429.15/901.69
  6. Step 6: Final answer
    x = 326.53

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Double scale
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Similar ratio
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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.