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Finding the Fourth Proportional to 510.62, 703.42 and 479.30

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Solution

The fourth proportional to 510.62, 703.42 and 479.30 is: 660.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.62 : 703.42 = 479.30 : x
  2. Step 2: Convert to fraction form
    510.62/703.42 = 479.30/x
  3. Step 3: Cross multiply
    510.62x = 703.42 × 479.30
  4. Step 4: Simplify right side
    510.62x = 337,144.49
  5. Step 5: Solve for x
    x = 337,144.49/510.62
  6. Step 6: Final answer
    x = 660.27

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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.