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Finding the Fourth Proportional to 577.88, 797.47 and 381.45

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Solution

The fourth proportional to 577.88, 797.47 and 381.45 is: 526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.88 : 797.47 = 381.45 : x
  2. Step 2: Convert to fraction form
    577.88/797.47 = 381.45/x
  3. Step 3: Cross multiply
    577.88x = 797.47 × 381.45
  4. Step 4: Simplify right side
    577.88x = 304,193.98
  5. Step 5: Solve for x
    x = 304,193.98/577.88
  6. Step 6: Final answer
    x = 526.40

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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.