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Finding the Fourth Proportional to 672.85, 928.74 and 437.14

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Solution

The fourth proportional to 672.85, 928.74 and 437.14 is: 603.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.85 : 928.74 = 437.14 : x
  2. Step 2: Convert to fraction form
    672.85/928.74 = 437.14/x
  3. Step 3: Cross multiply
    672.85x = 928.74 × 437.14
  4. Step 4: Simplify right side
    672.85x = 405,989.40
  5. Step 5: Solve for x
    x = 405,989.40/672.85
  6. Step 6: Final answer
    x = 603.39

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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.