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Finding the Fourth Proportional to 531.55, 733.62 and 310.51

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Solution

The fourth proportional to 531.55, 733.62 and 310.51 is: 428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.55 : 733.62 = 310.51 : x
  2. Step 2: Convert to fraction form
    531.55/733.62 = 310.51/x
  3. Step 3: Cross multiply
    531.55x = 733.62 × 310.51
  4. Step 4: Simplify right side
    531.55x = 227,796.35
  5. Step 5: Solve for x
    x = 227,796.35/531.55
  6. Step 6: Final answer
    x = 428.55

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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.