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Finding the Fourth Proportional to 487.64, 731.63 and 304.82

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Solution

The fourth proportional to 487.64, 731.63 and 304.82 is: 457.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.64 : 731.63 = 304.82 : x
  2. Step 2: Convert to fraction form
    487.64/731.63 = 304.82/x
  3. Step 3: Cross multiply
    487.64x = 731.63 × 304.82
  4. Step 4: Simplify right side
    487.64x = 223,015.46
  5. Step 5: Solve for x
    x = 223,015.46/487.64
  6. Step 6: Final answer
    x = 457.34

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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.