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Finding the Fourth Proportional to 562.17, 774.75 and 404.55

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Solution

The fourth proportional to 562.17, 774.75 and 404.55 is: 557.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.17 : 774.75 = 404.55 : x
  2. Step 2: Convert to fraction form
    562.17/774.75 = 404.55/x
  3. Step 3: Cross multiply
    562.17x = 774.75 × 404.55
  4. Step 4: Simplify right side
    562.17x = 313,425.11
  5. Step 5: Solve for x
    x = 313,425.11/562.17
  6. Step 6: Final answer
    x = 557.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.