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Finding the Fourth Proportional to 527.30, 791.40 and 253.52

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Solution

The fourth proportional to 527.30, 791.40 and 253.52 is: 380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.30 : 791.40 = 253.52 : x
  2. Step 2: Convert to fraction form
    527.30/791.40 = 253.52/x
  3. Step 3: Cross multiply
    527.30x = 791.40 × 253.52
  4. Step 4: Simplify right side
    527.30x = 200,635.73
  5. Step 5: Solve for x
    x = 200,635.73/527.30
  6. Step 6: Final answer
    x = 380.50

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.