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Finding the Fourth Proportional to 555.35, 833.03 and 521.15

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Solution

The fourth proportional to 555.35, 833.03 and 521.15 is: 781.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.35 : 833.03 = 521.15 : x
  2. Step 2: Convert to fraction form
    555.35/833.03 = 521.15/x
  3. Step 3: Cross multiply
    555.35x = 833.03 × 521.15
  4. Step 4: Simplify right side
    555.35x = 434,130.98
  5. Step 5: Solve for x
    x = 434,130.98/555.35
  6. Step 6: Final answer
    x = 781.73

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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.