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Finding the Fourth Proportional to 527.19, 790.68 and 253.22

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Solution

The fourth proportional to 527.19, 790.68 and 253.22 is: 379.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.19 : 790.68 = 253.22 : x
  2. Step 2: Convert to fraction form
    527.19/790.68 = 253.22/x
  3. Step 3: Cross multiply
    527.19x = 790.68 × 253.22
  4. Step 4: Simplify right side
    527.19x = 200,212.04
  5. Step 5: Solve for x
    x = 200,212.04/527.19
  6. Step 6: Final answer
    x = 379.77

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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.