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Finding the Fourth Proportional to 453.66, 679.08 and 260.70

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Solution

The fourth proportional to 453.66, 679.08 and 260.70 is: 390.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.66 : 679.08 = 260.70 : x
  2. Step 2: Convert to fraction form
    453.66/679.08 = 260.70/x
  3. Step 3: Cross multiply
    453.66x = 679.08 × 260.70
  4. Step 4: Simplify right side
    453.66x = 177,036.16
  5. Step 5: Solve for x
    x = 177,036.16/453.66
  6. Step 6: Final answer
    x = 390.24

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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.