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Finding the Fourth Proportional to 483.45, 669.87 and 473.07

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Solution

The fourth proportional to 483.45, 669.87 and 473.07 is: 655.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.45 : 669.87 = 473.07 : x
  2. Step 2: Convert to fraction form
    483.45/669.87 = 473.07/x
  3. Step 3: Cross multiply
    483.45x = 669.87 × 473.07
  4. Step 4: Simplify right side
    483.45x = 316,895.40
  5. Step 5: Solve for x
    x = 316,895.40/483.45
  6. Step 6: Final answer
    x = 655.49

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1.5x scale

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.