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Finding the Fourth Proportional to 649.33, 973.96 and 210.60

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Solution

The fourth proportional to 649.33, 973.96 and 210.60 is: 315.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.33 : 973.96 = 210.60 : x
  2. Step 2: Convert to fraction form
    649.33/973.96 = 210.60/x
  3. Step 3: Cross multiply
    649.33x = 973.96 × 210.60
  4. Step 4: Simplify right side
    649.33x = 205,118.41
  5. Step 5: Solve for x
    x = 205,118.41/649.33
  6. Step 6: Final answer
    x = 315.89

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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.