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Finding the Fourth Proportional to 531.63, 795.89 and 395.28

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Solution

The fourth proportional to 531.63, 795.89 and 395.28 is: 591.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.63 : 795.89 = 395.28 : x
  2. Step 2: Convert to fraction form
    531.63/795.89 = 395.28/x
  3. Step 3: Cross multiply
    531.63x = 795.89 × 395.28
  4. Step 4: Simplify right side
    531.63x = 314,600.39
  5. Step 5: Solve for x
    x = 314,600.39/531.63
  6. Step 6: Final answer
    x = 591.77

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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.