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Finding the Fourth Proportional to 510.72, 766.24 and 439.44

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Solution

The fourth proportional to 510.72, 766.24 and 439.44 is: 659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.72 : 766.24 = 439.44 : x
  2. Step 2: Convert to fraction form
    510.72/766.24 = 439.44/x
  3. Step 3: Cross multiply
    510.72x = 766.24 × 439.44
  4. Step 4: Simplify right side
    510.72x = 336,716.51
  5. Step 5: Solve for x
    x = 336,716.51/510.72
  6. Step 6: Final answer
    x = 659.30

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1.5x scale

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.