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Finding the Fourth Proportional to 416.68, 623.82 and 392.32

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Solution

The fourth proportional to 416.68, 623.82 and 392.32 is: 587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.68 : 623.82 = 392.32 : x
  2. Step 2: Convert to fraction form
    416.68/623.82 = 392.32/x
  3. Step 3: Cross multiply
    416.68x = 623.82 × 392.32
  4. Step 4: Simplify right side
    416.68x = 244,737.06
  5. Step 5: Solve for x
    x = 244,737.06/416.68
  6. Step 6: Final answer
    x = 587.35

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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.