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Finding the Fourth Proportional to 527.98, 728.50 and 303.92

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Solution

The fourth proportional to 527.98, 728.50 and 303.92 is: 419.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.98 : 728.50 = 303.92 : x
  2. Step 2: Convert to fraction form
    527.98/728.50 = 303.92/x
  3. Step 3: Cross multiply
    527.98x = 728.50 × 303.92
  4. Step 4: Simplify right side
    527.98x = 221,405.72
  5. Step 5: Solve for x
    x = 221,405.72/527.98
  6. Step 6: Final answer
    x = 419.34

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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.