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Finding the Fourth Proportional to 510.30, 703.98 and 379.08

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Solution

The fourth proportional to 510.30, 703.98 and 379.08 is: 522.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.30 : 703.98 = 379.08 : x
  2. Step 2: Convert to fraction form
    510.30/703.98 = 379.08/x
  3. Step 3: Cross multiply
    510.30x = 703.98 × 379.08
  4. Step 4: Simplify right side
    510.30x = 266,864.74
  5. Step 5: Solve for x
    x = 266,864.74/510.30
  6. Step 6: Final answer
    x = 522.96

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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.