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Finding the Fourth Proportional to 628.90, 943.38 and 304.16

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Solution

The fourth proportional to 628.90, 943.38 and 304.16 is: 456.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.90 : 943.38 = 304.16 : x
  2. Step 2: Convert to fraction form
    628.90/943.38 = 304.16/x
  3. Step 3: Cross multiply
    628.90x = 943.38 × 304.16
  4. Step 4: Simplify right side
    628.90x = 286,933.74
  5. Step 5: Solve for x
    x = 286,933.74/628.90
  6. Step 6: Final answer
    x = 456.25

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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.