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Finding the Fourth Proportional to 485.07, 669.40 and 264.03

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Solution

The fourth proportional to 485.07, 669.40 and 264.03 is: 364.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.07 : 669.40 = 264.03 : x
  2. Step 2: Convert to fraction form
    485.07/669.40 = 264.03/x
  3. Step 3: Cross multiply
    485.07x = 669.40 × 264.03
  4. Step 4: Simplify right side
    485.07x = 176,738.51
  5. Step 5: Solve for x
    x = 176,738.51/485.07
  6. Step 6: Final answer
    x = 364.36

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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.