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Finding the Fourth Proportional to 510.71, 764.94 and 290.83

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Solution

The fourth proportional to 510.71, 764.94 and 290.83 is: 435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.71 : 764.94 = 290.83 : x
  2. Step 2: Convert to fraction form
    510.71/764.94 = 290.83/x
  3. Step 3: Cross multiply
    510.71x = 764.94 × 290.83
  4. Step 4: Simplify right side
    510.71x = 222,467.50
  5. Step 5: Solve for x
    x = 222,467.50/510.71
  6. Step 6: Final answer
    x = 435.60

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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.