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Finding the Fourth Proportional to 602.73, 904.10 and 386.46

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Solution

The fourth proportional to 602.73, 904.10 and 386.46 is: 579.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.73 : 904.10 = 386.46 : x
  2. Step 2: Convert to fraction form
    602.73/904.10 = 386.46/x
  3. Step 3: Cross multiply
    602.73x = 904.10 × 386.46
  4. Step 4: Simplify right side
    602.73x = 349,396.55
  5. Step 5: Solve for x
    x = 349,396.55/602.73
  6. Step 6: Final answer
    x = 579.69

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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.