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Finding the Fourth Proportional to 531.30, 733.22 and 310.38

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Solution

The fourth proportional to 531.30, 733.22 and 310.38 is: 428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.30 : 733.22 = 310.38 : x
  2. Step 2: Convert to fraction form
    531.30/733.22 = 310.38/x
  3. Step 3: Cross multiply
    531.30x = 733.22 × 310.38
  4. Step 4: Simplify right side
    531.30x = 227,577.60
  5. Step 5: Solve for x
    x = 227,577.60/531.30
  6. Step 6: Final answer
    x = 428.34

Related Problems

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Double scale
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1.5x scale

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.