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Finding the Fourth Proportional to 375.32, 561.72 and 283.80

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Solution

The fourth proportional to 375.32, 561.72 and 283.80 is: 424.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.32 : 561.72 = 283.80 : x
  2. Step 2: Convert to fraction form
    375.32/561.72 = 283.80/x
  3. Step 3: Cross multiply
    375.32x = 561.72 × 283.80
  4. Step 4: Simplify right side
    375.32x = 159,416.14
  5. Step 5: Solve for x
    x = 159,416.14/375.32
  6. Step 6: Final answer
    x = 424.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.