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Finding the Fourth Proportional to 527.12, 790.08 and 372.80

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Solution

The fourth proportional to 527.12, 790.08 and 372.80 is: 558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.12 : 790.08 = 372.80 : x
  2. Step 2: Convert to fraction form
    527.12/790.08 = 372.80/x
  3. Step 3: Cross multiply
    527.12x = 790.08 × 372.80
  4. Step 4: Simplify right side
    527.12x = 294,541.82
  5. Step 5: Solve for x
    x = 294,541.82/527.12
  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.