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Finding the Fourth Proportional to 687.20, 1,032.34 and 594.98

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Solution

The fourth proportional to 687.20, 1,032.34 and 594.98 is: 893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687.20 : 1,032.34 = 594.98 : x
  2. Step 2: Convert to fraction form
    687.20/1,032.34 = 594.98/x
  3. Step 3: Cross multiply
    687.20x = 1,032.34 × 594.98
  4. Step 4: Simplify right side
    687.20x = 614,221.65
  5. Step 5: Solve for x
    x = 614,221.65/687.20
  6. Step 6: Final answer
    x = 893.80

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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.