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Finding the Fourth Proportional to 522.58, 784.18 and 193.75

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Solution

The fourth proportional to 522.58, 784.18 and 193.75 is: 290.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.58 : 784.18 = 193.75 : x
  2. Step 2: Convert to fraction form
    522.58/784.18 = 193.75/x
  3. Step 3: Cross multiply
    522.58x = 784.18 × 193.75
  4. Step 4: Simplify right side
    522.58x = 151,933.91
  5. Step 5: Solve for x
    x = 151,933.91/522.58
  6. Step 6: Final answer
    x = 290.74

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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.