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Finding the Fourth Proportional to 690.08, 952.32 and 375.35

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Solution

The fourth proportional to 690.08, 952.32 and 375.35 is: 517.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.08 : 952.32 = 375.35 : x
  2. Step 2: Convert to fraction form
    690.08/952.32 = 375.35/x
  3. Step 3: Cross multiply
    690.08x = 952.32 × 375.35
  4. Step 4: Simplify right side
    690.08x = 357,453.31
  5. Step 5: Solve for x
    x = 357,453.31/690.08
  6. Step 6: Final answer
    x = 517.99

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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.