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Finding the Fourth Proportional to 649.27, 973.90 and 324.63

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Solution

The fourth proportional to 649.27, 973.90 and 324.63 is: 486.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.27 : 973.90 = 324.63 : x
  2. Step 2: Convert to fraction form
    649.27/973.90 = 324.63/x
  3. Step 3: Cross multiply
    649.27x = 973.90 × 324.63
  4. Step 4: Simplify right side
    649.27x = 316,159.39
  5. Step 5: Solve for x
    x = 316,159.39/649.27
  6. Step 6: Final answer
    x = 486.95

Related Problems

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Half scale
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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.