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Finding the Fourth Proportional to 303.68, 453.60 and 260.15

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Solution

The fourth proportional to 303.68, 453.60 and 260.15 is: 388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.68 : 453.60 = 260.15 : x
  2. Step 2: Convert to fraction form
    303.68/453.60 = 260.15/x
  3. Step 3: Cross multiply
    303.68x = 453.60 × 260.15
  4. Step 4: Simplify right side
    303.68x = 118,001.77
  5. Step 5: Solve for x
    x = 118,001.77/303.68
  6. Step 6: Final answer
    x = 388.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.