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Finding the Fourth Proportional to 507.20, 700.64 and 480.92

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Solution

The fourth proportional to 507.20, 700.64 and 480.92 is: 664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.20 : 700.64 = 480.92 : x
  2. Step 2: Convert to fraction form
    507.20/700.64 = 480.92/x
  3. Step 3: Cross multiply
    507.20x = 700.64 × 480.92
  4. Step 4: Simplify right side
    507.20x = 336,951.79
  5. Step 5: Solve for x
    x = 336,951.79/507.20
  6. Step 6: Final answer
    x = 664.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.