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Finding the Fourth Proportional to 526.51, 789.13 and 372.21

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Solution

The fourth proportional to 526.51, 789.13 and 372.21 is: 557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.51 : 789.13 = 372.21 : x
  2. Step 2: Convert to fraction form
    526.51/789.13 = 372.21/x
  3. Step 3: Cross multiply
    526.51x = 789.13 × 372.21
  4. Step 4: Simplify right side
    526.51x = 293,722.08
  5. Step 5: Solve for x
    x = 293,722.08/526.51
  6. Step 6: Final answer
    x = 557.87

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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.