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Finding the Fourth Proportional to 918.00, 1,266.97 and 545.07

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Solution

The fourth proportional to 918.00, 1,266.97 and 545.07 is: 752.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.00 : 1,266.97 = 545.07 : x
  2. Step 2: Convert to fraction form
    918.00/1,266.97 = 545.07/x
  3. Step 3: Cross multiply
    918.00x = 1,266.97 × 545.07
  4. Step 4: Simplify right side
    918.00x = 690,584.76
  5. Step 5: Solve for x
    x = 690,584.76/918.00
  6. Step 6: Final answer
    x = 752.27

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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.