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Finding the Fourth Proportional to 522.10, 783.17 and 275.45

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Solution

The fourth proportional to 522.10, 783.17 and 275.45 is: 413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.10 : 783.17 = 275.45 : x
  2. Step 2: Convert to fraction form
    522.10/783.17 = 275.45/x
  3. Step 3: Cross multiply
    522.10x = 783.17 × 275.45
  4. Step 4: Simplify right side
    522.10x = 215,724.32
  5. Step 5: Solve for x
    x = 215,724.32/522.10
  6. Step 6: Final answer
    x = 413.19

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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.