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Finding the Fourth Proportional to 862.98, 1,292.45 and 603.24

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Solution

The fourth proportional to 862.98, 1,292.45 and 603.24 is: 903.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.98 : 1,292.45 = 603.24 : x
  2. Step 2: Convert to fraction form
    862.98/1,292.45 = 603.24/x
  3. Step 3: Cross multiply
    862.98x = 1,292.45 × 603.24
  4. Step 4: Simplify right side
    862.98x = 779,654.52
  5. Step 5: Solve for x
    x = 779,654.52/862.98
  6. Step 6: Final answer
    x = 903.44

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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.