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Finding the Fourth Proportional to 517.77, 714.44 and 331.43

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Solution

The fourth proportional to 517.77, 714.44 and 331.43 is: 457.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.77 : 714.44 = 331.43 : x
  2. Step 2: Convert to fraction form
    517.77/714.44 = 331.43/x
  3. Step 3: Cross multiply
    517.77x = 714.44 × 331.43
  4. Step 4: Simplify right side
    517.77x = 236,784.11
  5. Step 5: Solve for x
    x = 236,784.11/517.77
  6. Step 6: Final answer
    x = 457.32

Related Problems

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Double scale
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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.