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Finding the Fourth Proportional to 370.09, 510.70 and 212.61

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Solution

The fourth proportional to 370.09, 510.70 and 212.61 is: 293.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.09 : 510.70 = 212.61 : x
  2. Step 2: Convert to fraction form
    370.09/510.70 = 212.61/x
  3. Step 3: Cross multiply
    370.09x = 510.70 × 212.61
  4. Step 4: Simplify right side
    370.09x = 108,579.93
  5. Step 5: Solve for x
    x = 108,579.93/370.09
  6. Step 6: Final answer
    x = 293.39

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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.