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Finding the Fourth Proportional to 510.75, 704.82 and 300.92

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Solution

The fourth proportional to 510.75, 704.82 and 300.92 is: 415.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.75 : 704.82 = 300.92 : x
  2. Step 2: Convert to fraction form
    510.75/704.82 = 300.92/x
  3. Step 3: Cross multiply
    510.75x = 704.82 × 300.92
  4. Step 4: Simplify right side
    510.75x = 212,094.43
  5. Step 5: Solve for x
    x = 212,094.43/510.75
  6. Step 6: Final answer
    x = 415.26

Related Problems

Find fourth proportional to 255.38, 352.41 and 150.46
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.