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Finding the Fourth Proportional to 522.46, 781.66 and 359.65

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Solution

The fourth proportional to 522.46, 781.66 and 359.65 is: 538.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.46 : 781.66 = 359.65 : x
  2. Step 2: Convert to fraction form
    522.46/781.66 = 359.65/x
  3. Step 3: Cross multiply
    522.46x = 781.66 × 359.65
  4. Step 4: Simplify right side
    522.46x = 281,124.02
  5. Step 5: Solve for x
    x = 281,124.02/522.46
  6. Step 6: Final answer
    x = 538.08

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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.