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Finding the Fourth Proportional to 536.45, 740.42 and 303.71

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Solution

The fourth proportional to 536.45, 740.42 and 303.71 is: 419.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.45 : 740.42 = 303.71 : x
  2. Step 2: Convert to fraction form
    536.45/740.42 = 303.71/x
  3. Step 3: Cross multiply
    536.45x = 740.42 × 303.71
  4. Step 4: Simplify right side
    536.45x = 224,867.74
  5. Step 5: Solve for x
    x = 224,867.74/536.45
  6. Step 6: Final answer
    x = 419.18

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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.