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Finding the Fourth Proportional to 660.46, 911.51 and 424.32

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Solution

The fourth proportional to 660.46, 911.51 and 424.32 is: 585.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.46 : 911.51 = 424.32 : x
  2. Step 2: Convert to fraction form
    660.46/911.51 = 424.32/x
  3. Step 3: Cross multiply
    660.46x = 911.51 × 424.32
  4. Step 4: Simplify right side
    660.46x = 386,772.98
  5. Step 5: Solve for x
    x = 386,772.98/660.46
  6. Step 6: Final answer
    x = 585.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.