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Finding the Fourth Proportional to 602.85, 904.63 and 218.13

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Solution

The fourth proportional to 602.85, 904.63 and 218.13 is: 327.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.85 : 904.63 = 218.13 : x
  2. Step 2: Convert to fraction form
    602.85/904.63 = 218.13/x
  3. Step 3: Cross multiply
    602.85x = 904.63 × 218.13
  4. Step 4: Simplify right side
    602.85x = 197,326.94
  5. Step 5: Solve for x
    x = 197,326.94/602.85
  6. Step 6: Final answer
    x = 327.32

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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.