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Finding the Fourth Proportional to 527.00, 790.27 and 405.35

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Solution

The fourth proportional to 527.00, 790.27 and 405.35 is: 607.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.00 : 790.27 = 405.35 : x
  2. Step 2: Convert to fraction form
    527.00/790.27 = 405.35/x
  3. Step 3: Cross multiply
    527.00x = 790.27 × 405.35
  4. Step 4: Simplify right side
    527.00x = 320,330.98
  5. Step 5: Solve for x
    x = 320,330.98/527.00
  6. Step 6: Final answer
    x = 607.84

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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.