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Finding the Fourth Proportional to 543.84, 814.26 and 312.51

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Solution

The fourth proportional to 543.84, 814.26 and 312.51 is: 467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.84 : 814.26 = 312.51 : x
  2. Step 2: Convert to fraction form
    543.84/814.26 = 312.51/x
  3. Step 3: Cross multiply
    543.84x = 814.26 × 312.51
  4. Step 4: Simplify right side
    543.84x = 254,464.39
  5. Step 5: Solve for x
    x = 254,464.39/543.84
  6. Step 6: Final answer
    x = 467.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.