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Finding the Fourth Proportional to 621.20, 922.16 and 595.28

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Solution

The fourth proportional to 621.20, 922.16 and 595.28 is: 883.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.20 : 922.16 = 595.28 : x
  2. Step 2: Convert to fraction form
    621.20/922.16 = 595.28/x
  3. Step 3: Cross multiply
    621.20x = 922.16 × 595.28
  4. Step 4: Simplify right side
    621.20x = 548,943.40
  5. Step 5: Solve for x
    x = 548,943.40/621.20
  6. Step 6: Final answer
    x = 883.68

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.