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Finding the Fourth Proportional to 375.36, 514.77 and 356.64

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Solution

The fourth proportional to 375.36, 514.77 and 356.64 is: 489.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.36 : 514.77 = 356.64 : x
  2. Step 2: Convert to fraction form
    375.36/514.77 = 356.64/x
  3. Step 3: Cross multiply
    375.36x = 514.77 × 356.64
  4. Step 4: Simplify right side
    375.36x = 183,587.57
  5. Step 5: Solve for x
    x = 183,587.57/375.36
  6. Step 6: Final answer
    x = 489.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.