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Finding the Fourth Proportional to 602.18, 903.26 and 328.21

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Solution

The fourth proportional to 602.18, 903.26 and 328.21 is: 492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.18 : 903.26 = 328.21 : x
  2. Step 2: Convert to fraction form
    602.18/903.26 = 328.21/x
  3. Step 3: Cross multiply
    602.18x = 903.26 × 328.21
  4. Step 4: Simplify right side
    602.18x = 296,452.81
  5. Step 5: Solve for x
    x = 296,452.81/602.18
  6. Step 6: Final answer
    x = 492.30

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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.