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Finding the Fourth Proportional to 488.84, 673.41 and 465.40

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Solution

The fourth proportional to 488.84, 673.41 and 465.40 is: 641.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.84 : 673.41 = 465.40 : x
  2. Step 2: Convert to fraction form
    488.84/673.41 = 465.40/x
  3. Step 3: Cross multiply
    488.84x = 673.41 × 465.40
  4. Step 4: Simplify right side
    488.84x = 313,403.81
  5. Step 5: Solve for x
    x = 313,403.81/488.84
  6. Step 6: Final answer
    x = 641.12

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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.