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Finding the Fourth Proportional to 277.32, 382.85 and 215.01

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Solution

The fourth proportional to 277.32, 382.85 and 215.01 is: 296.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.32 : 382.85 = 215.01 : x
  2. Step 2: Convert to fraction form
    277.32/382.85 = 215.01/x
  3. Step 3: Cross multiply
    277.32x = 382.85 × 215.01
  4. Step 4: Simplify right side
    277.32x = 82,314.55
  5. Step 5: Solve for x
    x = 82,314.55/277.32
  6. Step 6: Final answer
    x = 296.82

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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.