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Finding the Fourth Proportional to 602.20, 898.43 and 548.38

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Solution

The fourth proportional to 602.20, 898.43 and 548.38 is: 818.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.20 : 898.43 = 548.38 : x
  2. Step 2: Convert to fraction form
    602.20/898.43 = 548.38/x
  3. Step 3: Cross multiply
    602.20x = 898.43 × 548.38
  4. Step 4: Simplify right side
    602.20x = 492,681.04
  5. Step 5: Solve for x
    x = 492,681.04/602.20
  6. Step 6: Final answer
    x = 818.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.