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Finding the Fourth Proportional to 436.32, 601.56 and 389.88

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Solution

The fourth proportional to 436.32, 601.56 and 389.88 is: 537.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.32 : 601.56 = 389.88 : x
  2. Step 2: Convert to fraction form
    436.32/601.56 = 389.88/x
  3. Step 3: Cross multiply
    436.32x = 601.56 × 389.88
  4. Step 4: Simplify right side
    436.32x = 234,536.21
  5. Step 5: Solve for x
    x = 234,536.21/436.32
  6. Step 6: Final answer
    x = 537.53

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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.