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Finding the Fourth Proportional to 690.37, 952.71 and 375.64

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Solution

The fourth proportional to 690.37, 952.71 and 375.64 is: 518.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.37 : 952.71 = 375.64 : x
  2. Step 2: Convert to fraction form
    690.37/952.71 = 375.64/x
  3. Step 3: Cross multiply
    690.37x = 952.71 × 375.64
  4. Step 4: Simplify right side
    690.37x = 357,871.22
  5. Step 5: Solve for x
    x = 357,871.22/690.37
  6. Step 6: Final answer
    x = 518.38

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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.