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Finding the Fourth Proportional to 370.40, 510.99 and 230.48

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Solution

The fourth proportional to 370.40, 510.99 and 230.48 is: 317.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.40 : 510.99 = 230.48 : x
  2. Step 2: Convert to fraction form
    370.40/510.99 = 230.48/x
  3. Step 3: Cross multiply
    370.40x = 510.99 × 230.48
  4. Step 4: Simplify right side
    370.40x = 117,770.42
  5. Step 5: Solve for x
    x = 117,770.42/370.40
  6. Step 6: Final answer
    x = 317.95

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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.