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Finding the Fourth Proportional to 527.29, 727.66 and 291.24

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Solution

The fourth proportional to 527.29, 727.66 and 291.24 is: 401.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.29 : 727.66 = 291.24 : x
  2. Step 2: Convert to fraction form
    527.29/727.66 = 291.24/x
  3. Step 3: Cross multiply
    527.29x = 727.66 × 291.24
  4. Step 4: Simplify right side
    527.29x = 211,923.70
  5. Step 5: Solve for x
    x = 211,923.70/527.29
  6. Step 6: Final answer
    x = 401.91

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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.