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Finding the Fourth Proportional to 384.79, 576.87 and 275.17

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Solution

The fourth proportional to 384.79, 576.87 and 275.17 is: 412.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.79 : 576.87 = 275.17 : x
  2. Step 2: Convert to fraction form
    384.79/576.87 = 275.17/x
  3. Step 3: Cross multiply
    384.79x = 576.87 × 275.17
  4. Step 4: Simplify right side
    384.79x = 158,737.32
  5. Step 5: Solve for x
    x = 158,737.32/384.79
  6. Step 6: Final answer
    x = 412.53

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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.