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Finding the Fourth Proportional to 510.13, 704.19 and 378.91

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Solution

The fourth proportional to 510.13, 704.19 and 378.91 is: 523.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.13 : 704.19 = 378.91 : x
  2. Step 2: Convert to fraction form
    510.13/704.19 = 378.91/x
  3. Step 3: Cross multiply
    510.13x = 704.19 × 378.91
  4. Step 4: Simplify right side
    510.13x = 266,824.63
  5. Step 5: Solve for x
    x = 266,824.63/510.13
  6. Step 6: Final answer
    x = 523.05

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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.