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Finding the Fourth Proportional to 577.92, 797.54 and 381.81

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Solution

The fourth proportional to 577.92, 797.54 and 381.81 is: 526.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.92 : 797.54 = 381.81 : x
  2. Step 2: Convert to fraction form
    577.92/797.54 = 381.81/x
  3. Step 3: Cross multiply
    577.92x = 797.54 × 381.81
  4. Step 4: Simplify right side
    577.92x = 304,506.84
  5. Step 5: Solve for x
    x = 304,506.84/577.92
  6. Step 6: Final answer
    x = 526.90

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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.