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Finding the Fourth Proportional to 577.28, 865.46 and 288.92

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Solution

The fourth proportional to 577.28, 865.46 and 288.92 is: 433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.28 : 865.46 = 288.92 : x
  2. Step 2: Convert to fraction form
    577.28/865.46 = 288.92/x
  3. Step 3: Cross multiply
    577.28x = 865.46 × 288.92
  4. Step 4: Simplify right side
    577.28x = 250,048.70
  5. Step 5: Solve for x
    x = 250,048.70/577.28
  6. Step 6: Final answer
    x = 433.15

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1.5x scale

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.