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Finding the Fourth Proportional to 577.47, 865.26 and 555.87

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Solution

The fourth proportional to 577.47, 865.26 and 555.87 is: 832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.47 : 865.26 = 555.87 : x
  2. Step 2: Convert to fraction form
    577.47/865.26 = 555.87/x
  3. Step 3: Cross multiply
    577.47x = 865.26 × 555.87
  4. Step 4: Simplify right side
    577.47x = 480,972.08
  5. Step 5: Solve for x
    x = 480,972.08/577.47
  6. Step 6: Final answer
    x = 832.90

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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.