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Finding the Fourth Proportional to 544.17, 812.05 and 485.76

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Solution

The fourth proportional to 544.17, 812.05 and 485.76 is: 724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.17 : 812.05 = 485.76 : x
  2. Step 2: Convert to fraction form
    544.17/812.05 = 485.76/x
  3. Step 3: Cross multiply
    544.17x = 812.05 × 485.76
  4. Step 4: Simplify right side
    544.17x = 394,465.48
  5. Step 5: Solve for x
    x = 394,465.48/544.17
  6. Step 6: Final answer
    x = 724.90

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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.