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Finding the Fourth Proportional to 649.48, 973.90 and 216.52

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Solution

The fourth proportional to 649.48, 973.90 and 216.52 is: 324.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.48 : 973.90 = 216.52 : x
  2. Step 2: Convert to fraction form
    649.48/973.90 = 216.52/x
  3. Step 3: Cross multiply
    649.48x = 973.90 × 216.52
  4. Step 4: Simplify right side
    649.48x = 210,868.83
  5. Step 5: Solve for x
    x = 210,868.83/649.48
  6. Step 6: Final answer
    x = 324.67

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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.