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Finding the Fourth Proportional to 527.24, 791.54 and 405.59

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Solution

The fourth proportional to 527.24, 791.54 and 405.59 is: 608.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.24 : 791.54 = 405.59 : x
  2. Step 2: Convert to fraction form
    527.24/791.54 = 405.59/x
  3. Step 3: Cross multiply
    527.24x = 791.54 × 405.59
  4. Step 4: Simplify right side
    527.24x = 321,036.24
  5. Step 5: Solve for x
    x = 321,036.24/527.24
  6. Step 6: Final answer
    x = 608.90

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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.