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Finding the Fourth Proportional to 649.58, 973.40 and 324.50

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Solution

The fourth proportional to 649.58, 973.40 and 324.50 is: 486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.58 : 973.40 = 324.50 : x
  2. Step 2: Convert to fraction form
    649.58/973.40 = 324.50/x
  3. Step 3: Cross multiply
    649.58x = 973.40 × 324.50
  4. Step 4: Simplify right side
    649.58x = 315,868.30
  5. Step 5: Solve for x
    x = 315,868.30/649.58
  6. Step 6: Final answer
    x = 486.27

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Double scale
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Similar ratio
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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.