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Finding the Fourth Proportional to 284.77, 427.92 and 154.87

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Solution

The fourth proportional to 284.77, 427.92 and 154.87 is: 232.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.77 : 427.92 = 154.87 : x
  2. Step 2: Convert to fraction form
    284.77/427.92 = 154.87/x
  3. Step 3: Cross multiply
    284.77x = 427.92 × 154.87
  4. Step 4: Simplify right side
    284.77x = 66,271.97
  5. Step 5: Solve for x
    x = 66,271.97/284.77
  6. Step 6: Final answer
    x = 232.72

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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.