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Finding the Fourth Proportional to 282.59, 390.15 and 177.83

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Solution

The fourth proportional to 282.59, 390.15 and 177.83 is: 245.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.59 : 390.15 = 177.83 : x
  2. Step 2: Convert to fraction form
    282.59/390.15 = 177.83/x
  3. Step 3: Cross multiply
    282.59x = 390.15 × 177.83
  4. Step 4: Simplify right side
    282.59x = 69,378.42
  5. Step 5: Solve for x
    x = 69,378.42/282.59
  6. Step 6: Final answer
    x = 245.51

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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.