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Finding the Fourth Proportional to 527.10, 727.06 and 427.56

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Solution

The fourth proportional to 527.10, 727.06 and 427.56 is: 589.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.10 : 727.06 = 427.56 : x
  2. Step 2: Convert to fraction form
    527.10/727.06 = 427.56/x
  3. Step 3: Cross multiply
    527.10x = 727.06 × 427.56
  4. Step 4: Simplify right side
    527.10x = 310,861.77
  5. Step 5: Solve for x
    x = 310,861.77/527.10
  6. Step 6: Final answer
    x = 589.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.