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Finding the Fourth Proportional to 527.40, 727.13 and 340.56

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Solution

The fourth proportional to 527.40, 727.13 and 340.56 is: 469.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.40 : 727.13 = 340.56 : x
  2. Step 2: Convert to fraction form
    527.40/727.13 = 340.56/x
  3. Step 3: Cross multiply
    527.40x = 727.13 × 340.56
  4. Step 4: Simplify right side
    527.40x = 247,632.24
  5. Step 5: Solve for x
    x = 247,632.24/527.40
  6. Step 6: Final answer
    x = 469.53

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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.