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Finding the Fourth Proportional to 544.88, 816.51 and 429.61

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Solution

The fourth proportional to 544.88, 816.51 and 429.61 is: 643.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.88 : 816.51 = 429.61 : x
  2. Step 2: Convert to fraction form
    544.88/816.51 = 429.61/x
  3. Step 3: Cross multiply
    544.88x = 816.51 × 429.61
  4. Step 4: Simplify right side
    544.88x = 350,776.78
  5. Step 5: Solve for x
    x = 350,776.78/544.88
  6. Step 6: Final answer
    x = 643.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.