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Finding the Fourth Proportional to 483.08, 666.72 and 317.54

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Solution

The fourth proportional to 483.08, 666.72 and 317.54 is: 438.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.08 : 666.72 = 317.54 : x
  2. Step 2: Convert to fraction form
    483.08/666.72 = 317.54/x
  3. Step 3: Cross multiply
    483.08x = 666.72 × 317.54
  4. Step 4: Simplify right side
    483.08x = 211,710.27
  5. Step 5: Solve for x
    x = 211,710.27/483.08
  6. Step 6: Final answer
    x = 438.25

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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.