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Finding the Fourth Proportional to 438.52, 604.48 and 314.32

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Solution

The fourth proportional to 438.52, 604.48 and 314.32 is: 433.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.52 : 604.48 = 314.32 : x
  2. Step 2: Convert to fraction form
    438.52/604.48 = 314.32/x
  3. Step 3: Cross multiply
    438.52x = 604.48 × 314.32
  4. Step 4: Simplify right side
    438.52x = 190,000.15
  5. Step 5: Solve for x
    x = 190,000.15/438.52
  6. Step 6: Final answer
    x = 433.28

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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.