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Finding the Fourth Proportional to 510.32, 765.60 and 279.44

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Solution

The fourth proportional to 510.32, 765.60 and 279.44 is: 419.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.32 : 765.60 = 279.44 : x
  2. Step 2: Convert to fraction form
    510.32/765.60 = 279.44/x
  3. Step 3: Cross multiply
    510.32x = 765.60 × 279.44
  4. Step 4: Simplify right side
    510.32x = 213,939.26
  5. Step 5: Solve for x
    x = 213,939.26/510.32
  6. Step 6: Final answer
    x = 419.23

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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.