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Finding the Fourth Proportional to 536.56, 740.37 and 315.49

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Solution

The fourth proportional to 536.56, 740.37 and 315.49 is: 435.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.56 : 740.37 = 315.49 : x
  2. Step 2: Convert to fraction form
    536.56/740.37 = 315.49/x
  3. Step 3: Cross multiply
    536.56x = 740.37 × 315.49
  4. Step 4: Simplify right side
    536.56x = 233,579.33
  5. Step 5: Solve for x
    x = 233,579.33/536.56
  6. Step 6: Final answer
    x = 435.33

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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.