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Finding the Fourth Proportional to 705.84, 973.54 and 484.80

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Solution

The fourth proportional to 705.84, 973.54 and 484.80 is: 668.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.84 : 973.54 = 484.80 : x
  2. Step 2: Convert to fraction form
    705.84/973.54 = 484.80/x
  3. Step 3: Cross multiply
    705.84x = 973.54 × 484.80
  4. Step 4: Simplify right side
    705.84x = 471,972.19
  5. Step 5: Solve for x
    x = 471,972.19/705.84
  6. Step 6: Final answer
    x = 668.67

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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.