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Finding the Fourth Proportional to 536.56, 740.70 and 439.36

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Solution

The fourth proportional to 536.56, 740.70 and 439.36 is: 606.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.56 : 740.70 = 439.36 : x
  2. Step 2: Convert to fraction form
    536.56/740.70 = 439.36/x
  3. Step 3: Cross multiply
    536.56x = 740.70 × 439.36
  4. Step 4: Simplify right side
    536.56x = 325,433.95
  5. Step 5: Solve for x
    x = 325,433.95/536.56
  6. Step 6: Final answer
    x = 606.52

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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.