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Finding the Fourth Proportional to 622.54, 857.14 and 591.76

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Solution

The fourth proportional to 622.54, 857.14 and 591.76 is: 814.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.54 : 857.14 = 591.76 : x
  2. Step 2: Convert to fraction form
    622.54/857.14 = 591.76/x
  3. Step 3: Cross multiply
    622.54x = 857.14 × 591.76
  4. Step 4: Simplify right side
    622.54x = 507,221.17
  5. Step 5: Solve for x
    x = 507,221.17/622.54
  6. Step 6: Final answer
    x = 814.76

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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.