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Finding the Fourth Proportional to 622.63, 929.38 and 577.57

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Solution

The fourth proportional to 622.63, 929.38 and 577.57 is: 862.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.63 : 929.38 = 577.57 : x
  2. Step 2: Convert to fraction form
    622.63/929.38 = 577.57/x
  3. Step 3: Cross multiply
    622.63x = 929.38 × 577.57
  4. Step 4: Simplify right side
    622.63x = 536,782.01
  5. Step 5: Solve for x
    x = 536,782.01/622.63
  6. Step 6: Final answer
    x = 862.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.