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Finding the Fourth Proportional to 690.51, 953.03 and 441.77

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Solution

The fourth proportional to 690.51, 953.03 and 441.77 is: 609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.51 : 953.03 = 441.77 : x
  2. Step 2: Convert to fraction form
    690.51/953.03 = 441.77/x
  3. Step 3: Cross multiply
    690.51x = 953.03 × 441.77
  4. Step 4: Simplify right side
    690.51x = 421,013.09
  5. Step 5: Solve for x
    x = 421,013.09/690.51
  6. Step 6: Final answer
    x = 609.71

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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.