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Finding the Fourth Proportional to 669.83, 923.27 and 483.05

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Solution

The fourth proportional to 669.83, 923.27 and 483.05 is: 665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.83 : 923.27 = 483.05 : x
  2. Step 2: Convert to fraction form
    669.83/923.27 = 483.05/x
  3. Step 3: Cross multiply
    669.83x = 923.27 × 483.05
  4. Step 4: Simplify right side
    669.83x = 445,985.47
  5. Step 5: Solve for x
    x = 445,985.47/669.83
  6. Step 6: Final answer
    x = 665.82

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1.5x scale

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.