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Finding the Fourth Proportional to 544.18, 750.55 and 355.17

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Solution

The fourth proportional to 544.18, 750.55 and 355.17 is: 489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.18 : 750.55 = 355.17 : x
  2. Step 2: Convert to fraction form
    544.18/750.55 = 355.17/x
  3. Step 3: Cross multiply
    544.18x = 750.55 × 355.17
  4. Step 4: Simplify right side
    544.18x = 266,572.84
  5. Step 5: Solve for x
    x = 266,572.84/544.18
  6. Step 6: Final answer
    x = 489.86

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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.