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Finding the Fourth Proportional to 536.41, 740.43 and 315.43

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Solution

The fourth proportional to 536.41, 740.43 and 315.43 is: 435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.41 : 740.43 = 315.43 : x
  2. Step 2: Convert to fraction form
    536.41/740.43 = 315.43/x
  3. Step 3: Cross multiply
    536.41x = 740.43 × 315.43
  4. Step 4: Simplify right side
    536.41x = 233,551.98
  5. Step 5: Solve for x
    x = 233,551.98/536.41
  6. Step 6: Final answer
    x = 435.40

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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.