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Finding the Fourth Proportional to 648.97, 895.55 and 369.23

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Solution

The fourth proportional to 648.97, 895.55 and 369.23 is: 509.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.97 : 895.55 = 369.23 : x
  2. Step 2: Convert to fraction form
    648.97/895.55 = 369.23/x
  3. Step 3: Cross multiply
    648.97x = 895.55 × 369.23
  4. Step 4: Simplify right side
    648.97x = 330,663.93
  5. Step 5: Solve for x
    x = 330,663.93/648.97
  6. Step 6: Final answer
    x = 509.53

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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.