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Finding the Fourth Proportional to 531.27, 797.19 and 253.56

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Solution

The fourth proportional to 531.27, 797.19 and 253.56 is: 380.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.27 : 797.19 = 253.56 : x
  2. Step 2: Convert to fraction form
    531.27/797.19 = 253.56/x
  3. Step 3: Cross multiply
    531.27x = 797.19 × 253.56
  4. Step 4: Simplify right side
    531.27x = 202,135.50
  5. Step 5: Solve for x
    x = 202,135.50/531.27
  6. Step 6: Final answer
    x = 380.48

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Double scale
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Similar ratio
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1.5x scale

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.