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Finding the Fourth Proportional to 637.45, 881.21 and 571.84

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Solution

The fourth proportional to 637.45, 881.21 and 571.84 is: 790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.45 : 881.21 = 571.84 : x
  2. Step 2: Convert to fraction form
    637.45/881.21 = 571.84/x
  3. Step 3: Cross multiply
    637.45x = 881.21 × 571.84
  4. Step 4: Simplify right side
    637.45x = 503,911.13
  5. Step 5: Solve for x
    x = 503,911.13/637.45
  6. Step 6: Final answer
    x = 790.51

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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.