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Finding the Fourth Proportional to 649.00, 973.58 and 258.98

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Solution

The fourth proportional to 649.00, 973.58 and 258.98 is: 388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.00 : 973.58 = 258.98 : x
  2. Step 2: Convert to fraction form
    649.00/973.58 = 258.98/x
  3. Step 3: Cross multiply
    649.00x = 973.58 × 258.98
  4. Step 4: Simplify right side
    649.00x = 252,138.89
  5. Step 5: Solve for x
    x = 252,138.89/649.00
  6. Step 6: Final answer
    x = 388.51

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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.