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Finding the Fourth Proportional to 483.68, 670.20 and 477.44

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Solution

The fourth proportional to 483.68, 670.20 and 477.44 is: 661.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.68 : 670.20 = 477.44 : x
  2. Step 2: Convert to fraction form
    483.68/670.20 = 477.44/x
  3. Step 3: Cross multiply
    483.68x = 670.20 × 477.44
  4. Step 4: Simplify right side
    483.68x = 319,980.29
  5. Step 5: Solve for x
    x = 319,980.29/483.68
  6. Step 6: Final answer
    x = 661.55

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.