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Finding the Fourth Proportional to 373.15, 513.39 and 328.69

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Solution

The fourth proportional to 373.15, 513.39 and 328.69 is: 452.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.15 : 513.39 = 328.69 : x
  2. Step 2: Convert to fraction form
    373.15/513.39 = 328.69/x
  3. Step 3: Cross multiply
    373.15x = 513.39 × 328.69
  4. Step 4: Simplify right side
    373.15x = 168,746.16
  5. Step 5: Solve for x
    x = 168,746.16/373.15
  6. Step 6: Final answer
    x = 452.22

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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.