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Finding the Fourth Proportional to 284.11, 392.04 and 159.77

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Solution

The fourth proportional to 284.11, 392.04 and 159.77 is: 220.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.11 : 392.04 = 159.77 : x
  2. Step 2: Convert to fraction form
    284.11/392.04 = 159.77/x
  3. Step 3: Cross multiply
    284.11x = 392.04 × 159.77
  4. Step 4: Simplify right side
    284.11x = 62,635.17
  5. Step 5: Solve for x
    x = 62,635.17/284.11
  6. Step 6: Final answer
    x = 220.46

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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.