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Finding the Fourth Proportional to 487.46, 730.16 and 453.75

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Solution

The fourth proportional to 487.46, 730.16 and 453.75 is: 679.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.46 : 730.16 = 453.75 : x
  2. Step 2: Convert to fraction form
    487.46/730.16 = 453.75/x
  3. Step 3: Cross multiply
    487.46x = 730.16 × 453.75
  4. Step 4: Simplify right side
    487.46x = 331,304.18
  5. Step 5: Solve for x
    x = 331,304.18/487.46
  6. Step 6: Final answer
    x = 679.65

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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.