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Finding the Fourth Proportional to 531.83, 797.63 and 141.81

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Solution

The fourth proportional to 531.83, 797.63 and 141.81 is: 212.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.83 : 797.63 = 141.81 : x
  2. Step 2: Convert to fraction form
    531.83/797.63 = 141.81/x
  3. Step 3: Cross multiply
    531.83x = 797.63 × 141.81
  4. Step 4: Simplify right side
    531.83x = 113,114.32
  5. Step 5: Solve for x
    x = 113,114.32/531.83
  6. Step 6: Final answer
    x = 212.69

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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.