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Finding the Fourth Proportional to 527.25, 727.61 and 291.19

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Solution

The fourth proportional to 527.25, 727.61 and 291.19 is: 401.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.25 : 727.61 = 291.19 : x
  2. Step 2: Convert to fraction form
    527.25/727.61 = 291.19/x
  3. Step 3: Cross multiply
    527.25x = 727.61 × 291.19
  4. Step 4: Simplify right side
    527.25x = 211,874.03
  5. Step 5: Solve for x
    x = 211,874.03/527.25
  6. Step 6: Final answer
    x = 401.85

Related Problems

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.