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Finding the Fourth Proportional to 356.76, 534.12 and 275.76

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Solution

The fourth proportional to 356.76, 534.12 and 275.76 is: 412.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.76 : 534.12 = 275.76 : x
  2. Step 2: Convert to fraction form
    356.76/534.12 = 275.76/x
  3. Step 3: Cross multiply
    356.76x = 534.12 × 275.76
  4. Step 4: Simplify right side
    356.76x = 147,288.93
  5. Step 5: Solve for x
    x = 147,288.93/356.76
  6. Step 6: Final answer
    x = 412.85

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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.