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Finding the Fourth Proportional to 571.36, 787.44 and 545.44

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Solution

The fourth proportional to 571.36, 787.44 and 545.44 is: 751.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.36 : 787.44 = 545.44 : x
  2. Step 2: Convert to fraction form
    571.36/787.44 = 545.44/x
  3. Step 3: Cross multiply
    571.36x = 787.44 × 545.44
  4. Step 4: Simplify right side
    571.36x = 429,501.27
  5. Step 5: Solve for x
    x = 429,501.27/571.36
  6. Step 6: Final answer
    x = 751.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.