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Finding the Fourth Proportional to 771.04, 1,156.54 and 283.82

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Solution

The fourth proportional to 771.04, 1,156.54 and 283.82 is: 425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    771.04 : 1,156.54 = 283.82 : x
  2. Step 2: Convert to fraction form
    771.04/1,156.54 = 283.82/x
  3. Step 3: Cross multiply
    771.04x = 1,156.54 × 283.82
  4. Step 4: Simplify right side
    771.04x = 328,249.18
  5. Step 5: Solve for x
    x = 328,249.18/771.04
  6. Step 6: Final answer
    x = 425.72

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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.