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Finding the Fourth Proportional to 510.56, 764.86 and 291.33

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Solution

The fourth proportional to 510.56, 764.86 and 291.33 is: 436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.56 : 764.86 = 291.33 : x
  2. Step 2: Convert to fraction form
    510.56/764.86 = 291.33/x
  3. Step 3: Cross multiply
    510.56x = 764.86 × 291.33
  4. Step 4: Simplify right side
    510.56x = 222,826.66
  5. Step 5: Solve for x
    x = 222,826.66/510.56
  6. Step 6: Final answer
    x = 436.44

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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.