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Finding the Fourth Proportional to 478.22, 717.35 and 416.00

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Solution

The fourth proportional to 478.22, 717.35 and 416.00 is: 624.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.22 : 717.35 = 416.00 : x
  2. Step 2: Convert to fraction form
    478.22/717.35 = 416.00/x
  3. Step 3: Cross multiply
    478.22x = 717.35 × 416.00
  4. Step 4: Simplify right side
    478.22x = 298,411.93
  5. Step 5: Solve for x
    x = 298,411.93/478.22
  6. Step 6: Final answer
    x = 624.01

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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.