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Finding the Fourth Proportional to 603.19, 903.56 and 548.65

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Solution

The fourth proportional to 603.19, 903.56 and 548.65 is: 821.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.19 : 903.56 = 548.65 : x
  2. Step 2: Convert to fraction form
    603.19/903.56 = 548.65/x
  3. Step 3: Cross multiply
    603.19x = 903.56 × 548.65
  4. Step 4: Simplify right side
    603.19x = 495,733.68
  5. Step 5: Solve for x
    x = 495,733.68/603.19
  6. Step 6: Final answer
    x = 821.86

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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.