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Finding the Fourth Proportional to 416.84, 625.36 and 156.84

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Solution

The fourth proportional to 416.84, 625.36 and 156.84 is: 235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.84 : 625.36 = 156.84 : x
  2. Step 2: Convert to fraction form
    416.84/625.36 = 156.84/x
  3. Step 3: Cross multiply
    416.84x = 625.36 × 156.84
  4. Step 4: Simplify right side
    416.84x = 98,081.46
  5. Step 5: Solve for x
    x = 98,081.46/416.84
  6. Step 6: Final answer
    x = 235.30

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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.