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Finding the Fourth Proportional to 522.52, 783.16 and 278.98

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Solution

The fourth proportional to 522.52, 783.16 and 278.98 is: 418.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.52 : 783.16 = 278.98 : x
  2. Step 2: Convert to fraction form
    522.52/783.16 = 278.98/x
  3. Step 3: Cross multiply
    522.52x = 783.16 × 278.98
  4. Step 4: Simplify right side
    522.52x = 218,485.98
  5. Step 5: Solve for x
    x = 218,485.98/522.52
  6. Step 6: Final answer
    x = 418.14

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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.