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Finding the Fourth Proportional to 370.15, 510.34 and 245.59

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Solution

The fourth proportional to 370.15, 510.34 and 245.59 is: 338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.15 : 510.34 = 245.59 : x
  2. Step 2: Convert to fraction form
    370.15/510.34 = 245.59/x
  3. Step 3: Cross multiply
    370.15x = 510.34 × 245.59
  4. Step 4: Simplify right side
    370.15x = 125,334.40
  5. Step 5: Solve for x
    x = 125,334.40/370.15
  6. Step 6: Final answer
    x = 338.60

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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.