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Finding the Fourth Proportional to 624.64, 935.60 and 335.20

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Solution

The fourth proportional to 624.64, 935.60 and 335.20 is: 502.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.64 : 935.60 = 335.20 : x
  2. Step 2: Convert to fraction form
    624.64/935.60 = 335.20/x
  3. Step 3: Cross multiply
    624.64x = 935.60 × 335.20
  4. Step 4: Simplify right side
    624.64x = 313,613.12
  5. Step 5: Solve for x
    x = 313,613.12/624.64
  6. Step 6: Final answer
    x = 502.07

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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.