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Finding the Fourth Proportional to 577.47, 866.20 and 144.63

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Solution

The fourth proportional to 577.47, 866.20 and 144.63 is: 216.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.47 : 866.20 = 144.63 : x
  2. Step 2: Convert to fraction form
    577.47/866.20 = 144.63/x
  3. Step 3: Cross multiply
    577.47x = 866.20 × 144.63
  4. Step 4: Simplify right side
    577.47x = 125,278.51
  5. Step 5: Solve for x
    x = 125,278.51/577.47
  6. Step 6: Final answer
    x = 216.94

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Double scale
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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.