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Finding the Fourth Proportional to 577.62, 866.45 and 491.55

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Solution

The fourth proportional to 577.62, 866.45 and 491.55 is: 737.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.62 : 866.45 = 491.55 : x
  2. Step 2: Convert to fraction form
    577.62/866.45 = 491.55/x
  3. Step 3: Cross multiply
    577.62x = 866.45 × 491.55
  4. Step 4: Simplify right side
    577.62x = 425,903.50
  5. Step 5: Solve for x
    x = 425,903.50/577.62
  6. Step 6: Final answer
    x = 737.34

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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.