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Finding the Fourth Proportional to 918.00, 1,266.51 and 603.43

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Solution

The fourth proportional to 918.00, 1,266.51 and 603.43 is: 832.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.00 : 1,266.51 = 603.43 : x
  2. Step 2: Convert to fraction form
    918.00/1,266.51 = 603.43/x
  3. Step 3: Cross multiply
    918.00x = 1,266.51 × 603.43
  4. Step 4: Simplify right side
    918.00x = 764,247.11
  5. Step 5: Solve for x
    x = 764,247.11/918.00
  6. Step 6: Final answer
    x = 832.52

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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.