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Finding the Fourth Proportional to 278.58, 417.56 and 246.16

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Solution

The fourth proportional to 278.58, 417.56 and 246.16 is: 368.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.58 : 417.56 = 246.16 : x
  2. Step 2: Convert to fraction form
    278.58/417.56 = 246.16/x
  3. Step 3: Cross multiply
    278.58x = 417.56 × 246.16
  4. Step 4: Simplify right side
    278.58x = 102,785.22
  5. Step 5: Solve for x
    x = 102,785.22/278.58
  6. Step 6: Final answer
    x = 368.96

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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.