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Finding the Fourth Proportional to 525.98, 789.10 and 372.21

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Solution

The fourth proportional to 525.98, 789.10 and 372.21 is: 558.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.98 : 789.10 = 372.21 : x
  2. Step 2: Convert to fraction form
    525.98/789.10 = 372.21/x
  3. Step 3: Cross multiply
    525.98x = 789.10 × 372.21
  4. Step 4: Simplify right side
    525.98x = 293,707.02
  5. Step 5: Solve for x
    x = 293,707.02/525.98
  6. Step 6: Final answer
    x = 558.40

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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.