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Finding the Fourth Proportional to 544.70, 815.70 and 436.70

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Solution

The fourth proportional to 544.70, 815.70 and 436.70 is: 653.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.70 : 815.70 = 436.70 : x
  2. Step 2: Convert to fraction form
    544.70/815.70 = 436.70/x
  3. Step 3: Cross multiply
    544.70x = 815.70 × 436.70
  4. Step 4: Simplify right side
    544.70x = 356,216.19
  5. Step 5: Solve for x
    x = 356,216.19/544.70
  6. Step 6: Final answer
    x = 653.97

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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.