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Finding the Fourth Proportional to 694.01, 1,045.12 and 603.79

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Solution

The fourth proportional to 694.01, 1,045.12 and 603.79 is: 909.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.01 : 1,045.12 = 603.79 : x
  2. Step 2: Convert to fraction form
    694.01/1,045.12 = 603.79/x
  3. Step 3: Cross multiply
    694.01x = 1,045.12 × 603.79
  4. Step 4: Simplify right side
    694.01x = 631,029.99
  5. Step 5: Solve for x
    x = 631,029.99/694.01
  6. Step 6: Final answer
    x = 909.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.