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Finding the Fourth Proportional to 438.18, 604.72 and 263.52

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Solution

The fourth proportional to 438.18, 604.72 and 263.52 is: 363.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.18 : 604.72 = 263.52 : x
  2. Step 2: Convert to fraction form
    438.18/604.72 = 263.52/x
  3. Step 3: Cross multiply
    438.18x = 604.72 × 263.52
  4. Step 4: Simplify right side
    438.18x = 159,355.81
  5. Step 5: Solve for x
    x = 159,355.81/438.18
  6. Step 6: Final answer
    x = 363.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.