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Finding the Fourth Proportional to 707.92, 977.19 and 446.69

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Solution

The fourth proportional to 707.92, 977.19 and 446.69 is: 616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.92 : 977.19 = 446.69 : x
  2. Step 2: Convert to fraction form
    707.92/977.19 = 446.69/x
  3. Step 3: Cross multiply
    707.92x = 977.19 × 446.69
  4. Step 4: Simplify right side
    707.92x = 436,501.00
  5. Step 5: Solve for x
    x = 436,501.00/707.92
  6. Step 6: Final answer
    x = 616.60

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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.