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Finding the Fourth Proportional to 918.01, 1,266.28 and 603.29

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Solution

The fourth proportional to 918.01, 1,266.28 and 603.29 is: 832.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.01 : 1,266.28 = 603.29 : x
  2. Step 2: Convert to fraction form
    918.01/1,266.28 = 603.29/x
  3. Step 3: Cross multiply
    918.01x = 1,266.28 × 603.29
  4. Step 4: Simplify right side
    918.01x = 763,934.06
  5. Step 5: Solve for x
    x = 763,934.06/918.01
  6. Step 6: Final answer
    x = 832.16

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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.