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Finding the Fourth Proportional to 536.81, 740.70 and 326.91

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Solution

The fourth proportional to 536.81, 740.70 and 326.91 is: 451.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.81 : 740.70 = 326.91 : x
  2. Step 2: Convert to fraction form
    536.81/740.70 = 326.91/x
  3. Step 3: Cross multiply
    536.81x = 740.70 × 326.91
  4. Step 4: Simplify right side
    536.81x = 242,142.24
  5. Step 5: Solve for x
    x = 242,142.24/536.81
  6. Step 6: Final answer
    x = 451.08

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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.