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Finding the Fourth Proportional to 510.76, 766.19 and 186.09

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Solution

The fourth proportional to 510.76, 766.19 and 186.09 is: 279.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.76 : 766.19 = 186.09 : x
  2. Step 2: Convert to fraction form
    510.76/766.19 = 186.09/x
  3. Step 3: Cross multiply
    510.76x = 766.19 × 186.09
  4. Step 4: Simplify right side
    510.76x = 142,580.30
  5. Step 5: Solve for x
    x = 142,580.30/510.76
  6. Step 6: Final answer
    x = 279.15

Related Problems

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Double scale
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Similar ratio
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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.