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Finding the Fourth Proportional to 510.66, 765.15 and 293.70

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Solution

The fourth proportional to 510.66, 765.15 and 293.70 is: 440.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.66 : 765.15 = 293.70 : x
  2. Step 2: Convert to fraction form
    510.66/765.15 = 293.70/x
  3. Step 3: Cross multiply
    510.66x = 765.15 × 293.70
  4. Step 4: Simplify right side
    510.66x = 224,724.56
  5. Step 5: Solve for x
    x = 224,724.56/510.66
  6. Step 6: Final answer
    x = 440.07

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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.