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Finding the Fourth Proportional to 487.64, 730.85 and 179.16

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Solution

The fourth proportional to 487.64, 730.85 and 179.16 is: 268.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.64 : 730.85 = 179.16 : x
  2. Step 2: Convert to fraction form
    487.64/730.85 = 179.16/x
  3. Step 3: Cross multiply
    487.64x = 730.85 × 179.16
  4. Step 4: Simplify right side
    487.64x = 130,938.19
  5. Step 5: Solve for x
    x = 130,938.19/487.64
  6. Step 6: Final answer
    x = 268.52

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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.