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Finding the Fourth Proportional to 555.40, 833.42 and 483.72

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Solution

The fourth proportional to 555.40, 833.42 and 483.72 is: 725.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.40 : 833.42 = 483.72 : x
  2. Step 2: Convert to fraction form
    555.40/833.42 = 483.72/x
  3. Step 3: Cross multiply
    555.40x = 833.42 × 483.72
  4. Step 4: Simplify right side
    555.40x = 403,141.92
  5. Step 5: Solve for x
    x = 403,141.92/555.40
  6. Step 6: Final answer
    x = 725.86

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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.