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Finding the Fourth Proportional to 621.19, 926.99 and 552.17

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Solution

The fourth proportional to 621.19, 926.99 and 552.17 is: 823.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.19 : 926.99 = 552.17 : x
  2. Step 2: Convert to fraction form
    621.19/926.99 = 552.17/x
  3. Step 3: Cross multiply
    621.19x = 926.99 × 552.17
  4. Step 4: Simplify right side
    621.19x = 511,856.07
  5. Step 5: Solve for x
    x = 511,856.07/621.19
  6. Step 6: Final answer
    x = 823.99

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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.