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Finding the Fourth Proportional to 531.37, 793.81 and 423.28

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Solution

The fourth proportional to 531.37, 793.81 and 423.28 is: 632.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.37 : 793.81 = 423.28 : x
  2. Step 2: Convert to fraction form
    531.37/793.81 = 423.28/x
  3. Step 3: Cross multiply
    531.37x = 793.81 × 423.28
  4. Step 4: Simplify right side
    531.37x = 336,003.90
  5. Step 5: Solve for x
    x = 336,003.90/531.37
  6. Step 6: Final answer
    x = 632.34

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.