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Finding the Fourth Proportional to 522.43, 783.78 and 368.66

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Solution

The fourth proportional to 522.43, 783.78 and 368.66 is: 553.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.43 : 783.78 = 368.66 : x
  2. Step 2: Convert to fraction form
    522.43/783.78 = 368.66/x
  3. Step 3: Cross multiply
    522.43x = 783.78 × 368.66
  4. Step 4: Simplify right side
    522.43x = 288,944.24
  5. Step 5: Solve for x
    x = 288,944.24/522.43
  6. Step 6: Final answer
    x = 553.08

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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.