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Finding the Fourth Proportional to 527.48, 790.62 and 372.80

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Solution

The fourth proportional to 527.48, 790.62 and 372.80 is: 558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.48 : 790.62 = 372.80 : x
  2. Step 2: Convert to fraction form
    527.48/790.62 = 372.80/x
  3. Step 3: Cross multiply
    527.48x = 790.62 × 372.80
  4. Step 4: Simplify right side
    527.48x = 294,743.14
  5. Step 5: Solve for x
    x = 294,743.14/527.48
  6. Step 6: Final answer
    x = 558.78

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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.