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Finding the Fourth Proportional to 483.33, 666.38 and 317.25

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Solution

The fourth proportional to 483.33, 666.38 and 317.25 is: 437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.33 : 666.38 = 317.25 : x
  2. Step 2: Convert to fraction form
    483.33/666.38 = 317.25/x
  3. Step 3: Cross multiply
    483.33x = 666.38 × 317.25
  4. Step 4: Simplify right side
    483.33x = 211,407.47
  5. Step 5: Solve for x
    x = 211,407.47/483.33
  6. Step 6: Final answer
    x = 437.40

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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.