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Finding the Fourth Proportional to 648.99, 895.00 and 427.56

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Solution

The fourth proportional to 648.99, 895.00 and 427.56 is: 589.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.99 : 895.00 = 427.56 : x
  2. Step 2: Convert to fraction form
    648.99/895.00 = 427.56/x
  3. Step 3: Cross multiply
    648.99x = 895.00 × 427.56
  4. Step 4: Simplify right side
    648.99x = 382,660.66
  5. Step 5: Solve for x
    x = 382,660.66/648.99
  6. Step 6: Final answer
    x = 589.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.