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Finding the Fourth Proportional to 736.16, 1,104.01 and 389.30

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Solution

The fourth proportional to 736.16, 1,104.01 and 389.30 is: 583.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.16 : 1,104.01 = 389.30 : x
  2. Step 2: Convert to fraction form
    736.16/1,104.01 = 389.30/x
  3. Step 3: Cross multiply
    736.16x = 1,104.01 × 389.30
  4. Step 4: Simplify right side
    736.16x = 429,783.63
  5. Step 5: Solve for x
    x = 429,783.63/736.16
  6. Step 6: Final answer
    x = 583.82

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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.