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Finding the Fourth Proportional to 446.40, 671.04 and 436.32

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Solution

The fourth proportional to 446.40, 671.04 and 436.32 is: 655.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.40 : 671.04 = 436.32 : x
  2. Step 2: Convert to fraction form
    446.40/671.04 = 436.32/x
  3. Step 3: Cross multiply
    446.40x = 671.04 × 436.32
  4. Step 4: Simplify right side
    446.40x = 292,788.17
  5. Step 5: Solve for x
    x = 292,788.17/446.40
  6. Step 6: Final answer
    x = 655.89

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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.