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Finding the Fourth Proportional to 467.60, 705.10 and 417.20

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Solution

The fourth proportional to 467.60, 705.10 and 417.20 is: 629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.60 : 705.10 = 417.20 : x
  2. Step 2: Convert to fraction form
    467.60/705.10 = 417.20/x
  3. Step 3: Cross multiply
    467.60x = 705.10 × 417.20
  4. Step 4: Simplify right side
    467.60x = 294,167.72
  5. Step 5: Solve for x
    x = 294,167.72/467.60
  6. Step 6: Final answer
    x = 629.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.