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Finding the Fourth Proportional to 648.71, 895.18 and 535.71

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Solution

The fourth proportional to 648.71, 895.18 and 535.71 is: 739.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.71 : 895.18 = 535.71 : x
  2. Step 2: Convert to fraction form
    648.71/895.18 = 535.71/x
  3. Step 3: Cross multiply
    648.71x = 895.18 × 535.71
  4. Step 4: Simplify right side
    648.71x = 479,556.88
  5. Step 5: Solve for x
    x = 479,556.88/648.71
  6. Step 6: Final answer
    x = 739.25

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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.